Hill Reclassifications


For the latest news on any hill reclassification due to a survey conducted with the Trimble GeoXH 6000 consult the Home page under the post heading Mapping Mountains Trimble Surveys or click {here} for the detailed Trimble Survey Spreadsheet.

This part of the Mapping Mountains blog is dedicated to any hill reclassification for the listings I have compiled.  These include ones found from map detail as well as those from accurate surveying.





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Moel y Penmaen (SH 338 386)

Hill Reclassifications post for Moel y Penmaen


The full details for the hill are:


Group:  Pen Llŷn

Name:  Moel y Penmaen

Dominance:  39.87%

OS 1:50,000 map:  123

Summit Grid Reference:  SH 33810 38687

Summit Height:  153m

Drop Summit to Bwlch:  c 61m

Drop Bwlch to ODN:  c 92m 



Myrddyn Phillips (March 2017)






Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Pt. c 71m (SH 310 297)

Hill Reclassifications post for Pt. c 71m

The full details for the hill are:

Group:  Pen Llŷn

Name:  Pt. c 71m

Dominance:  42.25%

OS 1:50,000 map:  123

Summit Grid Reference:  SH 31034 29730

Summit Height:  c 71m

Drop Summit to Bwlch:  c 30m

Drop Bwlch to ODN:  41m 


Myrddyn Phillips (March 2017)






Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Carreglefain (SH 324 410)

Hill Reclassifications post for Carreglefain

Survey post for Carreglefain


The full details for the hill are:

Group:  Pen Llŷn

Name:  Carreglefain

Dominance:  50.08%

OS 1:50,000 map:  123

Summit Grid Reference:  SH 32421 41054

Summit Height:  260.7m (converted to OSGM15)

Drop Summit to Bwlch:  130.6m

Drop Bwlch to ODN:  130.1m (converted to OSGM15) 


Myrddyn Phillips (March 2017)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Pt. 66m (SH 299 270)

Hill Reclassifications post for Pt. 66m

The full details for the hill are:

Group:  Pen Llŷn

Name:  Pt. 66m

Dominance:  51.52%

OS 1:50,000 map:  123

Summit Grid Reference:  SH 29957 27041

Summit Height:  66m

Drop Summit to Bwlch:  34m

Drop Bwlch to ODN:  32m 


Myrddyn Phillips (March 2017)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Carreg y Gwynt (SN 956 776)

Hill Reclassifications post for Carreg y Gwynt


The full details for the hill are:

Cardinal Hill:  Garreg Lwyd

Summit Height:  426.7m (LIDAR data)  

Name:  Carreg y Gwynt  

OS 1:50,000 map:  136, 147  

Summit Grid Reference:  SN 95698 77665  

Drop:  28.1m (LIDAR data)  


Myrddyn Phillips and Aled Williams (March 2017)




Mapping Mountains – Hill Reclassifications – 500m Twmpau


Pt. 499.1m (SN 863 760)

Hill Reclassifications post for Pt. 499.1m


The full details for the hill are:

Cardinal Hill:  Draws Drum

Summit Height:  499.1m (LIDAR data)

Name:  Pt. 499.1m

OS 1:50,000 map:  135, 136, 147

Summit Grid Reference:  SN 86343 76073
   
Drop:  27.9m (line survey)


Myrddyn Phillips (March 2017)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 499.1m (SN 863 760)

Hill Reclassifications post for Pt. 499.1m


The full details for the hill are:

Cardinal Hill:  Draws Drum

Summit Height:  499.1m (LIDAR data)

Name:  Pt. 499.1m

OS 1:50,000 map:  135, 136, 147

Summit Grid Reference:  SN 86343 76073 
Drop:  27.9m (line survey)


Myrddyn Phillips and Aled Williams (March 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Pt. 499.1m (SN 863 760)

Hill Reclassifications post for Pt. 499.1m


The full details for the hill are:

Cardinal Hill:  Draws Drum

Summit Height:  499.1m (LIDAR data)

Name:  Pt. 499.1m

OS 1:50,000 map:  135, 136, 147

Summit Grid Reference:  SN 86343 76073 
  
Drop:  27.9m (line survey)


Myrddyn Phillips and Aled Williams (March 2017)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Esgair Wen (SN 807 664)

Hill Reclassifications post for Esgair Wen


The full details for the hill are:

Cardinal Hill:  Drygarn Fawr  

Summit Height:  494.6m (LIDAR data)  

Name:  Esgair Wen  

OS 1:50,000 map:  135, 136, 147  

Summit Grid Reference:  SN 80767 66481  

Drop:  29.9m (LIDAR data)  


Myrddyn Phillips and Aled Williams (March 2017)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Carreg Rhoson (SM 672 256)

Hill Reclassifications post for Carreg Rhoson


The full details for the hill are:

Group:  Pembrokeshire Islands

Name:  Carreg Rhoson

Dominance:  100.00%

OS 1:50,000 map:  157

Summit Grid Reference:  SM 67235 25678

Summit Height:  c 30m

Drop Summit to Bwlch:  N/A

Drop Bwlch to ODN:  N/A 


Myrddyn Phillips (March 2017)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Castell Cricieth (SH 500 377)

Hill Reclassifications post for Castell Cricieth

Survey post for Castell Cricieth

The full details for the hill are:

Group:  Moel Hebog

Name:  Castell Cricieth

Dominance:  61.02%

OS 1:50,000 map:  123

Summit Grid Reference:  SH 50003 37733

Summit Height:  49.6m (converted to OSGM15)

Drop Summit to Bwlch:  30.3m

Drop Bwlch to ODN:  19.3m (converted to OSGM15) 


Myrddyn Phillips (March 2017)






Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Pt. 259m (SJ 181 438)

Hill Reclassifications post for Pt. 259m


The full details for the hill are:

Group:  Y Berwyn

Name:  Pt. 259m

Dominance:  33.59%

OS 1:50,000 map:  125

Summit Grid Reference:  SJ 18114 43816

Summit Height:  259m

Drop Summit to Bwlch:  87m

Drop Bwlch to ODN:  172m

Myrddyn Phillips (March 2017)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Ynys Hir (SH 566 396)

Hill Reclassifications post for Ynys Hir

Survey post for Ynys Hir

The full details for the hill are:

Group:  Moel Hebog

Name:  Ynys Hir

Dominance:  91.21%

OS 1:50,000 map:  124

Summit Grid Reference:  SH 56695 39693

Summit Height:  37.3m (converted to OSGM15)

Drop Summit to Bwlch:  c 34m

Drop Bwlch to ODN:  c 3m 


Myrddyn Phillips (February 2017)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Dinas Dinlle (SH 436 564)

Hill Reclassifications post for Dinas Dinlle

Survey post for Dinas Dinlle

The full details for the hill are:

Group:  Moel Hebog

Name:  Dinas Dinlle

Dominance:  92.16%

OS 1:50,000 map:  115, 123

Summit Grid Reference:  SH 43676 56438

Summit Height:  34.7m (converted to OSGM15)

Drop Summit to Bwlch:  c 32m

Drop Bwlch to ODN:  c 3m


Myrddyn Phillips (February 2017)






Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Geirth Mawr (SH 535 393)

Hill Reclassifications post for Geirth Mawr

The full details for the hill are:

Group:  Moel Hebog

Name:  Geirth Mawr

Dominance:  N/A

OS 1:50,000 map:  124

Summit Grid Reference:  SH 53512 39361

Summit Height:  56m

Drop Summit to Bwlch:  28m

Drop Bwlch to ODN:  28m 

Myrddyn Phillips (February 2017)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Bodlondeb Wood (SH 779 781)

Hill Reclassifications post for Bodlondeb Wood

The full details for the hill are:

Group:  Carneddau

Name:  Bodlondeb Wood

Dominance:  59.65%

OS 1:50,000 map:  115

Summit Grid Reference:  SH 77923 78114

Summit Height:  c 57m

Drop Summit to Bwlch:  c 34m

Drop Bwlch to ODN:  c 23m 

Myrddyn Phillips (February 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Blaen y Clawdd Du (SN 878 752)

Hill Reclassifications post for Blaen y Clawdd Du


The full details for the hill are:

Cardinal Hill:  Draws Drum

Summit Height:  516.8m (LIDAR data)

Name:  Blaen y Clawdd Du

OS 1:50,000 map:  135, 136, 147

Summit Grid Reference:  SN 87845 75282 
  
Drop:  15.6m (LIDAR data)


Myrddyn Phillips and Aled Williams (February 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Cefn Cwm Coel (SN 891 647)

Hill Reclassifications post for Cefn Cwm Coel


The full details for the hill are:

Cardinal Hill:  Carny yr Hyrddod

Summit Height:  504m

Name:  Cefn Cwm Coel

OS 1:50,000 map:  147

Summit Grid Reference:  SN 89101 64730 
  
Drop:  14m (LIDAR data for bwlch)


Myrddyn Phillips and Aled Williams (February 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Pen Maen Wern (SN 864 620)

Hill Reclassifications post for Pen Maen Wern


The full details for the hill are:

Cardinal Hill:  Drygarn Fawr

Summit Height:  543.2m (LIDAR data)

Name:  Pen Maen Wern

OS 1:50,000 map:  147

Summit Grid Reference:  SN 86433 62011 
  
Drop:  13.3m (LIDAR data)


Myrddyn Phillips and Aled Williams (February 2017)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Banc y Llyn (SN 804 652)

Hill Reclassifications post for Banc y Llyn


The full details for the hill are:

Cardinal Hill:  Drygarn Fawr

Summit Height:  473.7m (LIDAR data)

Name:  Banc y Llyn

OS 1:50,000 map:  135, 136, 147

Summit Grid Reference:  SN 80496 65235

Drop:  21.7m (LIDAR data)


Myrddyn Phillips and Aled Williams (February 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Cefn Onneu (SO 171 156)

Hill Reclassifications post for Cefn Onneu


The full details for the hill are:

Cardinal Hill:  Pen y Fan

Summit Height:  530.0m (LIDAR data)

Name:  Cefn Onneu

OS 1:50,000 map:  161

Summit Grid Reference:  SO 17112 15692 
  
Drop:  14.4m (LIDAR data)


Myrddyn Phillips and Aled Williams (January 2017)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 391.9m (SN 998 433)

Hill Reclassifications post for Pt. 391.9m


The full details for the hill are:

Cardinal Hill:  Clepyn Melyn

Summit Height:  391.9m (LIDAR data)

Name:  Pt. 391.9m

OS 1:50,000 map:  147, 160

Summit Grid Reference:  SN 99803 43305

Drop:  19.9m (LIDAR data)


Myrddyn Phillips and Aled Williams (January 2017)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Cefn Bach (SO 004 387)

Hill Reclassifications post for Cefn Bach


The full details for the hill are:

Cardinal Hill:  Clepyn Melyn

Summit Height:  389.2m (LIDAR data)

Name:  Cefn Bach

OS 1:50,000 map:  160

Summit Grid Reference:  SO 00471 38745

Drop:  20.3m (LIDAR data)


Myrddyn Phillips and Aled Williams (January 2017)






Mapping Mountains – Hill Reclassifications – Y Pedwarau


Cefn Bach (SO 002 372)

Hill Reclassification post for Cefn Bach

Survey post for Cefn Bach


The full details for the hill are:

Cardinal Hill:  Clepyn Melyn

Summit Height:  389.4m (converted to OSGM15) (Trimble and LIDAR data)

Name:  Cefn Bach

OS 1:50,000 map:  160

Summit Grid Reference:  SO 00293 37291

Drop:  54.4m (Trimble and LIDAR data)


Myrddyn Phillips and Aled Williams (January 2017)





Mapping Mountains – Hill Reclassifications – 500m Twmpau


Mynydd Llangatwg (SO 202 145)

Hill Reclassification post for Mynydd Llangatwg 

The full details for the hill are:

Cardinal Hill:  Pen y Fan

Summit Height:  528.4m (LIDAR data)

Name:  Mynydd Llangatwg

OS 1:50,000 map:  161

Summit Grid Reference:  SO 20283 14511 
  
Drop:  28.8m (LIDAR data)


My thanks to Aled Williams for sending the details of this hill to me.


Myrddyn Phillips (January 2017)





Mapping Mountains – Hill Reclassifications – Y Pellennig - The Remotest Hills of Wales


Pembrey Forest (SN 393 016)

Hill Reclassification post for Pembrey Forest


The full details for the hill are:

Cardinal Hill:  Mynydd Sylen

Summit Height:  27.1m (LIDAR data)

Name:  Pembrey Forest

OS 1:50,000 map:  159

Summit Grid Reference:  SN 39390 01694 
   
Drop:  17.6m (LIDAR data)

Distance:  2.360km


Myrddyn Phillips and Aled Williams (January 2017)





Mapping Mountains – Hill Reclassifications – 500m Twmpau


Cwar yr Ystrad (SO 083 142)

Hill Reclassification post for Cwar yr Ystrad



The full details for the hill are:

Cardinal Hill:  Pen y Fan

Summit Height:  579.9m (LIDAR data)

Name:  Cwar yr Ystrad

OS 1:50,000 map:  160

Summit Grid Reference:  SO 08358 14245  
 
Drop:  21.0m (LIDAR data)


My thanks to Aled Williams for sending the details of this hill to me.


Myrddyn Phillips (January 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Twynau Gwynion (SO 067 106)

Hill Reclassification post for Twynau Gwynion



The full details for the hill are:

Cardinal Hill:  Pen y Fan

Summit Height:  496.2m (LIDAR data)

Name:  Twynau Gwynion

OS 1:50,000 map:  160

Summit Grid Reference:  SO 06765 10699
   
Drop:  14.9m (LIDAR data)


Myrddyn Phillips and Aled Williams (January 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Cwar yr Ystrad (SO 082 140)

Hill Reclassification post for Cwar yr Ystrad



The full details for the hill are:

Cardinal Hill:  Pen y Fan

Summit Height:  572.8m (LIDAR data)

Name:  Cwar yr Ystrad

OS 1:50,000 map:  160

Summit Grid Reference:  SO 08216 14087 
  
Drop:  17.5m (LIDAR data)


Myrddyn Phillips and Aled Williams (January 2017)





Mapping Mountains – Hill Reclassifications – Yr Uchafion


Cwar yr Ystrad (SO 083 142)

Hill Reclassification post for Cwar yr Ystrad



The full details for the hill are:

Cardinal Hill:  Pen y Fan

Summit Height:  579.9m (LIDAR data)

Name:  Cwar yr Ystrad

OS 1:50,000 map:  160

Summit Grid Reference:  SO 08358 14245 
  
Drop:  21.0m (LIDAR data)


Myrddyn Phillips and Aled Williams (January 2017)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Lan (SO 052 391) 

Hill Reclassification post for Lan



The full details for the hill are:

Cardinal Hill:  Clepyn Melyn

Summit Height:  413.6m (LIDAR data)

Name:  Lan

OS 1:50,000 map:  160

Summit Grid Reference:  SO 05243 39144

Drop:  35.7m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 408.4m (SO 186 070)

Hill Reclassification post for Pt. 408.4m



The full details for the hill are:

Cardinal Hill:  Mynydd Carn y Cefn

Summit Height:  408.4m (LIDAR data)

Name:  Pt. 408.4m

OS 1:50,000 map:  161

Summit Grid Reference:  SO 18603 07087

Drop:  22.0m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Craig Rhiw Berfa (SS 945 906)

Hill Reclassification post for Craig Rhiw Berfa



The full details for the hill are:

Cardinal Hill:  Werfa

Summit Height:  397.2m (LIDAR data)

Name:  Craig Rhiw Berfa

OS 1:50,000 map:  170

Summit Grid Reference:  SS 94593 90610

Drop:  18.8m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)






Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 408.0m, Hirfynydd (SN 822 051)

Hill Reclassification post for Pt. 408.0m, Hirfynydd



The full details for the hill are:

Cardinal Hill:  Hirfynydd

Summit Height:  408.0m (LIDAR data)

Name:  Pt. 408m, Hirfynydd

OS 1:50,000 map:  160

Summit Grid Reference:  SN 82213 05117

Drop:  18.5m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Cefn Bach (SO 208 038)

Hill Reclassification post for Cefn Bach



The full details for the hill are:

Cardinal Hill:  Mynydd Carn y Cefn

Summit Height:  427.2m (LIDAR data)

Name:  Cefn Bach

OS 1:50,000 map:  171

Summit Grid Reference:  SO 20819 03887

Drop:  21.0m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Twyn Disgwylfa (SS 995 959)

Hill Reclassification post for Twyn Disgwylfa



The full details for the hill are:

Cardinal Hill:  Craig y Llyn

Summit Height:  428.1m (LIDAR data)

Name:  Twyn Disgwylfa

OS 1:50,000 map:  170

Summit Grid Reference:  SS 99572 95976

Drop:  28.8m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 415.6m (SO 243 011)

Hill Reclassification post for Pt. 415.6m



The full details for the hill are:

Cardinal Hill:  Mynydd Coety

Summit Height:  415.6m (LIDAR data)

Name:  Pt. 415.6m

OS 1:50,000 map:  171

Summit Grid Reference:  SO 24354 01195 

Drop:  31.4m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – 200m Twmpau


Y Ceiliog Mawr (SH 594 598)

Hill Reclassification post for Y Ceiliog Mawr



The full details for the hill are:

Cardinal Hill:  Y Garn

Summit Height:  220.3m (LIDAR data)

Name:  Y Ceiliog Mawr

OS 1:50,000 map:  115

Summit Grid Reference:  SH 59467 59848

Drop:  37.5m (LIDAR data)


Myrddyn Phillips (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pedwarau 


Moel Tryfan (SH 517 559) 

Hill Reclassification post for Moel Tryfan



The full details for the hill are:

Cardinal Hill:  Mynydd Mawr

Summit Height:  405.4m (LIDAR data)

Name:  Moel Tryfan

OS 1:50,000 map:  115

Summit Grid Reference:  SH 51781 55927  

Drop:  21.5m (LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pellennig - The Remotest Hills of Wales 


Esgair y Llyn (SN 841 701)

Hill Reclassification post for Esgair y Llyn



The full details for the hill are:

Cardinal Hill:  Carny yr Hyrddod

Summit Height:  528.8m (LIDAR data)

Name:  Esgair y Llyn

OS 1:50,000 map:  135, 136, 147

Summit Grid Reference:  SN 84118 70177
     
Drop:  15.5m (LIDAR data)

Distance:  4.535km


Myrddyn Phillips and Aled Williams (December 2016)





Mapping Mountains – Hill Reclassifications – Y Pedwarau 


Moelfre (SH 717 744) 

Hill Reclassification post for Moelfre

Survey post for Moelfre



The full details for the hill are:

Cardinal Hill:  Tal y Fan

Summit Height:  433.0m (converted to OSGM15)

Name:  Moelfre

OS 1:50,000 map:  115

Summit Grid Reference:  SH 71733 74418 

Drop:  18.3m (bwlch LIDAR data)


Myrddyn Phillips and Aled Williams (December 2016)






Mapping Mountains – Hill Reclassifications – Yr Uchafion 


Pt. 637.4m (SO 266 322)

Hill Reclassification post for Pt. 637.4m



The full details for the hill are:

Cardinal Hill:  Waun Fach

Summit Height:  637.4m (LIDAR data)

Name:  Pt. 637.4m

OS 1:50,000 map:  161

Summit Grid Reference:  SO 26698 32276 
   
Drop:  14.8m (LIDAR data)


Myrddyn Phillips and Aled Williams (November 2016)






Mapping Mountains – Hill Reclassifications – Yr Uchafion 


Carnedd y Ddelw (SH 708 705)

Hill Reclassification post for Carnedd y Ddelw



The full details for the hill are:

Cardinal Hill:  Carnedd Llywelyn

Summit Height:  685.6m (LIDAR data)

Name:  Carnedd y Ddelw

OS 1:50,000 map:  115

Summit Grid Reference:  SH 70810 70531 
   
Drop:  13.6m (LIDAR data)


Myrddyn Phillips and Aled Williams (November 2016)






Mapping Mountains – Hill Reclassifications – Yr Uchafion 


Craig Gwaun Taf (SO 005 207)

Hill Reclassification post for Craig Gwaun Taf

Survey post for Craig Gwaun Taf



The full details for the hill are:

Cardinal Hill:  Pen y Fan

Summit Height:  826.4

Name:  Craig Gwaun Taf

OS 1:50,000 map:  160

Summit Grid Reference:  SO 00548 20720 
   
Drop:  16.1m


Myrddyn Phillips and Aled Williams (November 2016)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Mynydd Coch (SH 804 099)

Hill Reclassification post for Mynydd Coch

Survey post for Mynydd Coch



The full details for the hill are:

Group:  Bryniau Dyfi

Name:  Mynydd Coch

Dominance:  33.31%

OS 1:50,000 map:  124, 125

Summit Grid Reference:  SH 80458 09952

Summit Height:  468.3m (converted to OSGM15)

Drop Summit to Bwlch:  156m

Drop Bwlch to ODN:  312m 


Myrddyn Phillips (October 2016)





Mapping Mountains – Hill Reclassifications – The 500-Metre Tops of Ireland


Pigeon Rock Mountain North Top (J 261 250)

Hill Reclassification post for Pigeon Rock Mountain North Top



The full details for the hill are:

Cardinal Hill:  Slieve Donard

Summit Height:  534m

Name:  Pigeon Rock Mountain North Top

OS of NI 1:50,000 map:  29

Summit Grid Reference:  J 261 250

Drop:  c 20m


Michael Dewey and Myrddyn Phillips (August 2016)





Mapping Mountains – Hill Reclassifications – 300m Twmpau



Pt. 384.9m, Penmaen Mawr (SH 702 757)

Hill Reclassification post for Pt. 384.9m, Penmaen Mawr

Survey post for Pt. 384.9m, Penmaen Mawr


The full details for the hill are:

Cardinal Hill:  Carnedd Llywelyn

Summit Height:  384.9m (converted to OSGM15)

Name:  Pt. 384.9m, Penmaen Mawr

OS 1:50,000 map:  115

Summit Grid Reference:  SH 70200 75727  

Drop:  29.8m


Myrddyn Phillips (August 2016)






Mapping Mountains – Hill Reclassifications – Y Pedwarau


Penmaen Mawr (SH 698 755)

Hill Reclassification post for Penmaen Mawr

Survey post for Penmaen Mawr


The full details for the hill are:

Cardinal Hill:  Carnedd Llywelyn

Summit Height:  390.4m (converted to OSGM15)

Name:  Penmaen Mawr

OS 1:50,000 map:  115

Summit Grid Reference:  SH 69865 75523 
  
Drop:  26.9m



Myrddyn Phillips and Aled Williams (July 2016)






Mapping Mountains – Hill Reclassifications – 30m-99m Twmpau


Pt. 23.8m (SM 706 236)

Hill Reclassification post for Pt. 23.8m

Survey post for Pt. 23.8m



The full details for the hill are:

Cardinal Island:  Ynys Dewi

Summit Height:  23.8m

Name:  Pt. 24m

OS 1:50,000 map:  157

Summit Grid Reference:  SM 70677 23686

Drop:  c 22m


Myrddyn Phillips (May 2016)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales

There has been a new entry in to the ranks of Y Trechol – The Dominant Hills of Wales due to a survey with the Trimble GeoXH 6000 and which has resulted in the hill being listed in the Lesser Welsh Dominant list.  The hill is in the Group known as the Pembrokeshire Islands and is situated on the southern part of Ynys Dewi, which is also commonly known as Ramsey.  This island is situated to the west of St David’s in the south-west of Wales.

The Trimble GeoXH 6000 survey that resulted in this hill’s reclassification was conducted on the 15th May 2016 on a beautiful afternoon in still and sunny conditions.

As the hill is situated on an island the only way to approach is via boat and the only company with permission to land on Ynys Dewi is Thousand Island Adventures (tel: 01437-721721).  The hill can be easily accessed from where the boat docks as a gravelled track leads up to The Farmhouse from where a good path heads toward the southern part of the island.

The name of the hill is Foel Fawr and until the survey with the Trimble GeoXH 6000 the hill was listed with c 29m of drop, based on the 72m summit spot height on current Ordnance Survey maps, and an estimated bwlch height of c 43m based on bwlch contouring between 40m – 45m, these values gave the hill c 29m of drop which is insufficient for qualification to Y Trechol – The Dominant Hills of Wales list.

The survey with the Trimble GeoXH 6000 resulted in a 71.9m (71.928m) summit height and a 41.9m (41.873m) bwlch height, with these values giving the hill 30.1m of drop and a Dominance of 41.78% which is sufficient for it to qualify as a Lesser Welsh Dominant hill.


The full details for the hill are:

Group:  Pembrokeshire Islands

Name:  Foel Fawr

Dominance:  41.78%

OS 1:50,000 map:  157

Summit Grid Reference:  SM 70542 22567

Summit Height:  71.9m

Drop Summit to Bwlch:  30.1m

Drop Bwlch to ODN:  41.9m 



Foel Fawr (SM 705 225) now classified as a Lesser Welsh Dominant


Myrddyn Phillips (May 2016)






Mapping Mountains – Hill Reclassifications – 30m-99m Twmpau

There has been a reclassification to the listing of Twmpau (thirty welsh metre prominences and upward) hills due to a recent survey with the Trimble GeoXH 6000.  The hill is listed in the 30m – 99m height band of Twmpau hills and is situated on the southern part of Ynys Dewi (Ramsey), which is an island to the west of St David’s in south-west Wales.

The hill appeared in the original Welsh P30 listings on Geoff Crowder’s v-g.me website and was included in the Sub-List adjoined to the 30m-99m height band of hills, and was the only hill listed in this Sub-List under the grouping of the Pembrokeshire Islands.

The Trimble GeoXH 6000 survey that resulted in this hill’s reclassification was conducted on the 15th May 2016 in the mid-afternoon in beautiful, sunny and still conditions.

As the hill is situated on an island the only way to approach is via boat and the only company with permission to land on Ynys Dewi is Thousand Island Adventures (tel: 01437-721721).  The hill can be easily accessed from where the boat docks as a gravelled track leads up to The Farmhouse from where a good path heads toward the southern part of the island.

The name of the hill is Foel Fawr and it is given a 72m summit spot height on current Ordnance Survey maps, and has been listed with an estimated bwlch height of c 43m based on bwlch contouring between 40m – 45m, these values gave the hill c 29m of drop and therefore it remained listed as a Sub-Twmpau.

Two points were surveyed for summit position and also for bwlch position, these are given below:


Summit 1:  71.9m (71.928m) at SM 70542 22567

Summit 2:  71.8m (71.795m) at SM 70539 22566

Bwlch 1:  41.7m (41.738m) at SM 70504 22667

Bwlch 2:  41.9m (41.873m) at SM 70511 22665


The surveys for bwlch position were conducted on the valley to valley traverse and therefore the higher result is taken when calculating the drop value for the hill. 

Therefore the survey with the Trimble GeoXH 6000 resulted in a 71.9m summit height and a 41.9m bwlch height, with these values giving the hill 30.1m of drop.  As the minimum drop for qualification to the main Twmpau list is 30m this means that Foel Fawr is reclassified from a Sub-Twmpau to a Twmpau.


The full details for the hill are:

Cardinal Island:  Ynys Dewi

Summit Height:  71.9m

Name:  Foel Fawr

OS 1:50,000 map:  157

Summit Grid Reference:  SM 70542 22567

Drop:  30.1m


Foel Fawr (SM 705 225) now reclassified from a Sub-Twmpau to a Twmpau


Myrddyn Phillips (May 2016)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales

There has been a reclassification from the listing of Y Trechol – The Dominant Hills of Wales due to a survey with the Trimble GeoXH 6000 and which has resulted in the hill being taken out of the Lesser Welsh Dominant list and included in the Dominant list.  The hill is in the Group known as the Pembrokeshire Islands and is situated on the northern part of Ynys Dewi, which is also commonly known as Ramsey.  This island is situated to the west of St David’s in the south-west of Wales.

The Trimble GeoXH 6000 survey that resulted in this hill’s reclassification was conducted on the 15th May 2016 on a beautiful morning in still and sunny conditions.

As the hill is situated on an island the only way to approach is via boat and the only company with permission to land on Ynys Dewi is Thousand Island Adventures (tel: 01437-721721).  The hill can be easily accessed from where the boat docks as a gravelled track leads up to The Farmhouse from where a vehicle path heads toward The Bungalow, which is a house on the eastern slopes of the hill.  A narrower path leaves this main route and heads toward the summit of the hill.

The name of the hill is Carn Ysgubor, with its composition presented as Carnysgubor on current Ordnance Survey maps, and it had been listed with 49.50% Dominance based on the 101m summit spot height on Ordnance Survey maps and an estimated bwlch height of c 51m, these values gave this hill c 50m of drop. 

The survey with the Trimble GeoXH 6000 resulted in a 102.4m (102.369m) summit height and a 51.2m (51.182m) bwlch height, giving this hill a Dominance of 50.00% (50.002442%) and therefore it just sneaks in to the ranks of being classified as a Dominant hill and confirms its reclassification from a Lesser Welsh Dominant to the ranks of Y Trechol - The Dominant Hills of Wales.


The full details for the hill are:

Group:  Pembrokeshire Islands

Name:  Carn Ysgubor

Dominance:  50.00%

OS 1:50,000 map:  157

Summit Grid Reference:  SM 69953 24603

Summit Height:  102.4m

Drop Summit to Bwlch:  51.2m

Drop Bwlch to ODN:  51.2m 



Carn Ysgubor (SM 699 246) now reclassified from a Lesser Welsh Dominant to a Dominant hill


Myrddyn Phillips (May 2016)





Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales

Ynys Fach (SM 822 327)

There has been a deletion from the listing of Y Trechol – The Dominant Hills of Wales due to a survey with the Trimble GeoXH 6000 and which has resulted in the hill being taken out of the main Dominant list and subjected to a life of rather pitiful non dominance.  The hill is in the Group known as the Pembrokeshire Islands and is situated on the northern coast of Pembrokeshire, and is positioned between the small communities of Trefin (Trevine) to its east and Porthgain to its west.

The hill is better described as an island, and even more so as a tidal island, as it is connected to the coastline of mainland Wales by a pebbled beach that according to maps is cut off from the mainland at high water.  It can be approached by boat, but an ascent of the island is feasible, albeit with a steep and potentially dangerous descent to the bwlch from the mainland.  This approach starts from directly opposite the island and necessitates finding a route down through scrub undergrowth and bi-passing the rock and cliffs that pre-dominate this part of the coastline.  If attempting this route please be careful.

The Trimble GeoXH 6000 survey that resulted in this island’s deletion was conducted on the 14th May 2016 on a beautiful sunny evening in the company of Adrian Rayner, Ayako and Rob Woodall.  It was Rob’s suggestion to go and have a look at it, and he found the route down to the pebbled beach which constitutes this island’s connecting bwlch.

The name of the island is Ynys Fach and it had been listed with 96.77% Dominance based on a summit height of c 31m estimated from the island having an uppermost 30m ring contour on current Ordnance Survey maps, and an estimated bwlch height of 1m taken to the pebbled beach connecting this island to the mainland.

Two points were surveyed for summit position and these are given below:


Summit 1:  30.8m (30.789m, converted to OSGM15) at SM 82209 32743

Summit 2:  30.7m (30.727m, converted to OSGM15) at SM 82217 32752


The data set for the bwlch was remarkably good when considering that the equipment was placed in what resembled an enclosed and walled canyon, with the resulting height being 1.2m (1.225m, converted to OSGM15) at SM 82180 32693.  These values give Ynys Fach a drop of only 29.6m which is below the minimum of 30m drop required for qualification to Y Trechol – the Dominant Hills of Wales list.


The full details for the hill are:

Group:  Pembrokeshire Islands

Name:  Ynys Fach

Dominance:  N/A

OS 1:50,000 map:  157

Summit Grid Reference:  SM 82209 32743

Summit Height:  30.8m

Drop Summit to Bwlch:  29.6m

Drop Bwlch to ODN:  1.2m 



Ynys Fach (SM 822 327) now deleted from the ranks of Y Trechol - The Dominant Hills of Wales


Myrddyn Phillips (May 2016)





Mapping Mountains – Hill Reclassifications – 30m-99m Twmpau

Ynys Fach (SM 822 327)

There has been a reclassification to the listing of Twmpau (thirty welsh metre prominences and upward) hills due to a recent survey with the Trimble GeoXH 6000.  The hill is listed in the 30m – 99m height band of Twmpau hills and is situated on the northern Pembrokeshire coast close to the small communities of Porthgain to its west and Trefin (Trevine) to its east.

The hill is better described as an island, and even more so as a tidal island, and is connected to the mainland of Wales by a pebbled beach that according to maps is cut off from the mainland at high water.  It can be approached by boat, but an ascent of the island is feasible, albeit steep and potentially dangerous, from the mainland.  This approach starts from directly opposite the island and necessitates finding a route down bi-passing the rock and cliffs that pre-dominate this part of the coastline.  If attempting this route please be careful.

The island was surveyed on 14th May 2016 on a beautiful sunny evening in the company of Adrian Rayner, Ayako and Rob Woodall.  It was Rob’s suggestion to go and have a look at it, and he found the route down to the pebbled beach which constitutes this island’s connecting bwlch.

The name of the island is Ynys Fach and it first appeared in a hill list on Geoff Crowder’s v-g.me website as a part of the original listing of Welsh P30s taking in the 100m height bands below the height of 500m. 

Ynys Fach is given an uppermost contour ring of 30m on current Ordnance Survey maps with no adjoined spot height.  However, the Ordnance Survey Six Inch map revised in 1906 and published in 1908 gives a 99ft height for the island, this is when the composition of the name was presented as Ynys Fâch, as opposed to the current Ynys-fach.  The 99ft spot height was later given on the Ordnance Survey 1:25,000 Historical map, with 99ft being an approximate 30.2m in metric measurement.

Two points were surveyed for summit position and these are given below:


Summit 1:  30.8m (30.789m, converted to OSGM15) at SM 82209 32743

Summit 2:  30.7m (30.727m, converted to OSGM15) at SM 82217 32752


The data set for the bwlch was remarkably good when considering that the equipment was placed in what resembled an enclosed and walled canyon, with the result being 1.2m (1.225m, converted to OSGM15) at SM 82180 32693.  These values give Ynys Fach a drop of only 29.6m and therefore it is reclassified from a 30m-99m Twmpau to a Sub-Twmpau.


The full details for the hill are:

Cardinal Hill:  Garn Fawr

Summit Height:  30.8m

Name:  Ynys Fach

OS 1:50,000 map:  157

Summit Grid Reference:  SM 822 327

Drop:  29.6m



Ynys Fach (SM 822 327) now reclassified from a Twmpau to a Sub-Twmpau



Myrddyn Phillips (May 2016)





Mapping Mountains – Hill Reclassifications – 30m-99m Twmpau

There has been a new addition to the Sub category within the 30m – 99m Twmpau (thirty welsh metre prominences and upward) hill list instigated by a survey with the Trimble.   The hill is better described as an island and is situated to the west of St David’s in south-west Wales, and forms part of the chain of islands known as the Bishops and Clerks.

The Trimble GeoXH 6000 survey that resulted in this hill’s inclusion as a 30m – 99m Sub-Twmpau was conducted on the 14th May 2016 in the early afternoon on a fine day in good, dry and sunny conditions.  The trip to this and other islands was organised by Adrian Rayner and the survey took place in the company of Adrian, Rob Woodall, Bob Kerr and Jon Glew, with Sheila Glew, Akako and Sarah Kerr remaining on the RIB whilst we were on the island.

Not surprisingly the island can only be accessed by boat, and although landing is relatively easy the way to the summit involves a scramble, and although not difficult it is exposed, with the prospect of an undignified dunking in the sea a distinct probability if one foot hold proves a wee bit slippy.

The name of the island is Daufraich and it comprises two parts, with its easterly high point being given the map height of 20m, and its westerly high point being given two positions of 21m high on current Ordnance Survey maps.  We only had time to land on the westerly part of the island which proved visually higher than the easterly part.  I also only had time for one survey, and consensus of opinion was that the highest part of the island was where the south-eastern 21m spot height appears on the ground, with the ground where the north-western 21m spot height is positioned being assessed as slightly lower.

Daufraich was not included in the Sub-List which accompanied the original listing of 30m -99m hills that appeared on Geoff Crowders v-g.me website, as that Sub-List comprised ‘Hills to Survey’ and as this island was under 30m in height it was not included as the only hills that were, were those deemed to have chance of qualifying for the main P30 list after having been surveyed.  However, this Sub-List has now been standardised and includes all hills that are known to have at least 20m of drop and below 30m of drop.

The survey with the Trimble GeoXH 6000 resulted in a 21.7m summit height, which as an island is also this hill’s drop value, and therefore confirming its entry in to the 30m – 99m Sub-Twmpau ranks.


The full details for the hill are:

Cardinal Island:  Bishops and Clerks

Summit Height:  21.7m

Name:  Daufraich

OS 1:50,000 map:  157

Summit Grid Reference:  SM 66199 23673

Drop:  21.7m



Daufraich (SM 661 236) the new 30m - 99m Sub-Twmpau



Myrddyn Phillips (May 2016)





Mapping Mountains – Hill Reclassifications – Y Pellennig – The Remotest Hills of Wales



Bryn Llwyd (SN 835 920)  

There has been a new hill that has entered the list of Y Pellennig – The Remotest Hills of Wales, due to a recent Trimble survey.  The hill is situated in the Pumlumon group of hills in the northern part of mid Wales and is situated between the towns of Llanidloes to its south-east and Machynlleth to its north-west.

The hill was surveyed over two days on 5th and 13th May 2016, both in beautiful sunshine and its name is Bryn Llwyd.  It can be accessed from the east via a track that leaves a minor road toward the farm of Nant-yr-hafod, or alternatively it can be accessed from its north via a track that leaves a minor road leading toward the lake of Glaslyn, or from a track that leaves the same minor road and makes its way around the southern flank of Y Grug.  These approaches from the north have to contend with Cors yr Ebolion, which as its Welsh name suggests is a bog.  If tempted by one of these northern approaches it is advisable to keep to a path that contours the eastern flank of Banc Bugeilyn before losing height to cross the reed infested stream close to the south-west corner of the conifer plantation to the north of this hill’s summit.

Bryn Llwyd was surveyed by the Trimble GeoXH 6000 as being 501.4m high, and prior to this survey the highest point listed hereabouts was Bryn yr Ŵyn which had been regarded as being higher than Bryn Llwyd and therefore listed as the summit in the 500m Twmpau list.  However, Bryn yr Ŵyn was surveyed by the Trimble as being 499.9m high, and as contour interpolation and a rudimentary survey suggested that the connecting bwlch between these two hills was not low enough to give each sufficient drop to be listed as separate summits; only Bryn yr Ŵyn was previously listed.  This Trimble survey confirms Bryn Llwyd to be the higher summit (see Summit Relocation post) and as the nearest paved public road at SN 84696 94288 is 2.525km from the summit this hill qualifies for the listing of Y Pellennig – The Remotest Hills of Wales, having the required 15m minimum drop and 2.5km minimum distance between the summit and the nearest paved public road.

This now brings the overall total for Y Pellennig to 168 hills for the Complete list (All Wales), with the total for the Mainland Wales list being 124 hills.  The Master List will be duly updated on the Mapping Mountains site.


The full details for the hill are:

Cardinal Hill:  Pumlumon

Summit Height:  501.4m

Name:  Bryn Llwyd

OS 1:50,000 map:  135, 136

Summit Grid Reference:  SN 83574 92022

Drop:  30.3m

Distance:  2.525km


The list of additions and deletions in the Pellennig list since the 1st edition of Y Pellennig – The Remotest Hills of Wales was published by Europeaklist is as follows:


ADDITIONS



Bryn Llwyd (SN 835 920) 1st survey2nd survey



DELETIONS




Bryn Llwyd (SN 835 920) now confirmed as a Pellennig hill

For details on the 1st Trimble survey and the 2nd Trimble survey that promoted this hill to Pellennig status.


Myrddyn Phillips and Aled Williams (May 2016)





Mapping Mountains – Hill Reclassifications – Yr Uchafion

There has been a deletion of an Uchaf by a survey conducted with the Trimble GeoXH 6000.  Yr Uchafion is the draft title for a list of the Welsh 500m P15s that takes in all hills in Wales at or above 500m that have a minimum of 15m of drop, the list is a joint compilation with Aled Williams.  Details relating to this list were published on the Mapping Mountains site in November 2015.

The hill is situated in the Pumlumon group of hills in the heartland of northern mid Wales and is positioned to the south of Foel Fadian, which is the hill’s Cardinal Hill, and between the towns of Llanidloes to its south-east and Machynlleth to its north-west.  It can be easily accessed from a minor road to its north from where a track leads toward the lake of Glaslyn; the hill is positioned just to the west of this track.  Alternatively an extended route can be devised from its south where a path can be followed above the course of the Afon Hengwm.

The name of the hill is Graig Fach (the) little rock and was surveyed on 5th May 2016 in beautiful early morning sunshine.  Graig Fach has a 514m summit spot height and bwlch contouring between 490m – 500m with a 499m spot height appearing on the Ordnance Survey enlarged mapping on the Geograph website, this latter spot height is positioned on the track and interpolation suggests that it is not positioned where the critical bwlch is situated.

The bwlch consists of moor grass and heather and two data sets were taken, both within a few metres of one another, whilst the summit consists of moor grass and again, two data sets were taken resulting in the hill only having 14.5m of drop and therefore below the 15m minimum drop value required to qualify for the list.

This now revises the total of Uchaf hills which will be updated accordingly and the hill is now listed as a Sub-Uchaf.


The full details for the hill are:

Cardinal Hill:  Foel Fadian

Summit Height:  513.1m

Name:  Graig Fach

OS 1:50,000 map:  135, 136

Summit Grid Reference:  SN 821 931

Drop:  14.5m



The reclassifications to Yr Uchafion / The Welsh 500m P15s reported on Mapping Mountains are as follows:


RECLASSIFIED FROM UCHAF TO SUB-UCHAF





Graig Fach (SN 821 931) now reclassified from an Uchaf to a Sub-Uchaf


Myrddyn Phillips and Aled Williams (May 2016)





Mapping Mountains – Hill Reclassifications – Y Pellennig – The Remotest Hills of Wales

There has been a deletion of a hill from the list of Y Pellennig – The Remotest Hills of Wales, due to a survey with the Trimble.  The hill is situated in the Pumlumon group in northern mid Wales and is situated between the towns of Machynlleth to its north-west and Llanidloes to its south-east with the mountain lakes of Glaslyn to its north and Bugeilyn to its south.

The hill was surveyed on 5th May 2016 in beautiful early morning sunshine and its name is Graig Fach.  It can be easily accessed from the north via the track that leaves a minor road toward the lake of Glaslyn, or alternatively a longer approach to the hill is from the south-west following the path above the course of the Afon Hengwm. 

Graig Fach has a 514m summit spot height and bwlch contouring between 490m – 500m with a 499m spot height appearing on the Ordnance Survey enlarged mapping on the Geograph website, this latter spot height is positioned on the track and interpolation suggests that it is not positioned where the critical bwlch is situated.

The bwlch consists of moor grass and heather and two data sets were taken, both within a few metres of one another, whilst the summit consists of moor grass and again, two data sets were taken resulting in the hill only having 14.5m of drop and therefore below the 15m minimum drop value required to qualify for the list.  This hill is a loss for the Pellennig listing as it is one that must be seldom visited and affords good views across to the expanse of wilderness situated around Llechwedd Crin and Banc Bugeilyn.

This now brings the overall total for Y Pellennig to 167 hills for the Complete list (All Wales), with the total for the Mainland Wales list also decreasing by one to 123 hills.  The Master List will be duly updated on the Mapping Mountains site.


The full details for the hill are:

Cardinal Hill:  Foel Fadian

Summit Height:  513.1m

Name:  Graig Fach

OS 1:50,000 map:  135, 136

Summit Grid Reference:  SN 821 931

Drop:  14.5m


The list of additions and deletions in the Pellennig list since the 1st edition of Y Pellennig – The Remotest Hills of Wales was published by Europeaklist is as follows:


ADDITIONS





DELETIONS




Graig Fach (SN 821 931) now deleted from Y Pellennig list



Myrddyn Phillips and Aled Williams (May 2016)





Mapping Mountains – Hill Reclassifications – 300m Twmpau

There has been a new addition to the 300m Twmpau (thirty welsh metre prominences and upward) hill list with its confirmation as a P30 instigated by a survey with the Trimble.   The hill is situated between Llanwddyn to its west, Dolanog to its south, Llanfyllin to its east and Pen-y-bont-fawr to its north, and is positioned in the central part of Y Berwyn.

The hill is named Moel y Gôd and the first time it ever appeared in a hill list was in 2003 when the original Welsh P30 hills under 500m in height were published on Geoff Crowder’s v-g.me website.  It was then listed in the Sub-List which was named ‘Hills to Survey’.  The reason for this was that Moel y Gôd was only given a 308m summit spot height on current maps, and meant that its qualification to the main P30 list was dependent upon bwlch contour interpolation.  As the use of interpolation did not form part of this list the hill was listed in the ‘Hills to Survey’ Sub-List.   When this list was first published on Geoff’s website it did not include a drop value for each hill, although the qualification for the main list and the Sub-List was based on drop, these values were added to the list at a later date.

When these drop values were added I also decided to include hills in the Main P30 Twmpau list through interpolation of map contours, although some of these details were passed onto Geoff, the great majority were not.  When these figures were added to the list I gave Moel y Gôd c 35m of drop and promoted it into the ranks of P30 hills.  This drop value was estimated from its 308m summit spot height and an estimated bwlch height of c 273m based on the 1:25,000 map bwlch contouring between 270m – 280m.  Even though the hill had been promoted in my list the details were never made public, so it was now time to have it Trimbled and to confirm its status via the Mapping Mountains site.

The hill can be accessed from where a public footpath contours round its northern flank; however the summit is not situated on open access land so permission to visit should be sought.  There is sufficient parking for one or two vehicles near the intersection between the B 4393 and the B 4395 which is only a short distance from the gate giving access on to the footpath.

The survey with the Trimble GeoXH 6000 resulted in a 307.6m summit height and a 270.6m bwlch height; these values give this hill 37.0m of drop and confirm its status as a P30 Twmpau.


The full details for the hill are:

Cardinal Hill:  Rhialgwm

Summit Height:  307.6m

Name:  Moel y Gôd

OS 1:50,000 map:  125

Summit Grid Reference:  SJ 07248 16808

Drop:  37.0m


Moel y Gôd (SJ 07248 16808) now confirmed as a 300m Twmpau

For details on the survey that promoted this hill to 300m Twmpau status please click {here}

Myrddyn Phillips (May 2016)






Mapping Mountains – Hill Reclassifications – Y Pedwarau

There has been another reclassification of a Pedwar to Sub-Pedwar by surveying with the Trimble, the third within the last month.  The hill was listed as a Pedwar due to a basic levelling survey (BLS) that was conducted on the 15th December 2003 and listed with the minimum qualifying drop of 30m.  It was surveyed with the Trimble on the 8th April 2016 on a fine clear day.

The hill has three potential positions for its bwlch, with only two of these having been surveyed by BLS.  All three and its summit were surveyed with the Trimble GeoXH 6000.  All survey results are given below, and listed from north to south:


Bwlch 1    SO 18847 70099    379.444m    critical bwlch for Pt. 408m

Bwlch 2    SO 18397 69858    379.610m    critical bwlch for 393.9m high intermediary bump

Pt. 408m summit    407.698m    SO 18077 69277

Bwlch 3    SO 18002 69004    378.254m    critical bwlch for Weston Bank


BLS bwlch 2 to summit    102ft (31.1m)        Trimble survey    28.1m

BLS bwlch 3 to summit    98.5ft (30.0m)        Trimble survey    29.4m


The critical bwlch for this hill is positioned at Bwlch 1 and gives the hill 28.3m of drop.


The hill is situated in the northern hills of Fforest Glud (Radnor Forest) with its Cardinal Hill being Great Rhos, and is positioned to the north of the A 488 and situated between the small communities of Llanfihangel Rhydithon to its south-west and Llangunllo to its north-east.

The hill is not named on current Ordnance Survey maps and was originally listed by a part invented name of Pen Fraichwen in the Welsh 400m P30 list that was published on Geoff Crowder’s v-g.me website.  When this list was duplicated to form the category of Tumps listed by Mark Jackson the name was also unfortunately duplicated.  Things have moved on since this time and we are not using invented names for hills, and where no local name or historical name of merit is known we are now using the point (Pt. 408m) notation.

The hill can be accessed from southward or northward of its summit where rights of way approach the hill; however the actual summit is not on open access land, so permission to visit should be sought.  The hill can be combined with a number of adjacent hills and an extended circuit can be devised from Bleddfa which is situated eastward from the summit.

This now brings the overall total for Y Pedwarau to 445 hills with five additions, and seven reclassifications to Sub-Pedwar since publication of the list by Europeaklist in May 2013.  The hill will be taken out of the main list and added to the Sub-Pedwar list in forthcoming publications.  The list of Pedwar hills is available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Great Rhos

Summit Height:  407.7m

Name:  Pt. 408m

OS 1:50,000 map:  136, 148

Summit Grid Reference:  SO 18077 69277

Drop:  28.3m


The list of additions and reclassifications from the Pedwar list since the 1st edition of Y Pedwarau was published by Europeaklist are as follows:


PEDWAR ADDITIONS








PEDWAR RECLASSIFICATIONS










Pt. 408m (SO 180 692) now reclassified to a Sub-Pedwar

For details on the survey that reclassified this hill from Pedwar to Sub-Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (April 2016)






Mapping Mountains – Hill Reclassifications – 100m Twmpau


Pandy Bank (SJ 336 538)

There has been a new addition to the 100m Twmpau (thirty welsh metre prominences and upward) hill list instigated by a survey with the Trimble.   The hill is situated on the northern outskirts of Wrecsam (Wrexham) overlooking the community of Pandy, in the easterly part of the Moel y Gamelin range of hills.

The Trimble GeoXH 6000 survey that resulted in this hill’s inclusion as a 100m P30 Twmpau was conducted in the afternoon on the 5th April 2016 in good, dry and sometimes bright conditions.

The hill can be accessed from its north from the end of the Pont y Capel Lane where there is sufficient space for three or four cars to be parked.  A broad path leaves the end of the paved road beside a low metal barrier barring entrance to four wheel drive vehicles; a sign proclaims that the land beyond this point is private, so those wishing to visit should technically seek permission to do so.  The broad path leads through woodland toward a high metal fence that borders the adjacent Shrewsbury – Chester railway line where the bwlch of the hill is situated.  The broad path follows this boundary and the summit can be accessed up its steep northern face or from its south, all approaches are steep and much of the hill’s upper slopes have silver birch covering them.

The hill is named Pandy Bank and its summit is positioned at SJ 336 538.  This is a locally known name for the hill and was found when I made enquiries during my ascent.  The only name that appears on current Ordnance Survey maps relating to this hill is ‘Spoil Heap (disused)’.  As the Ordnance Survey detail implies, this hill is the relic of mining waste which was deposited from the old Gresford Colliery.  This site now forms a part of the Gresford Industrial Park.

Current Ordnance Survey 1:50,000 and 1:25,000 mapping does not give this hill any ring contours; however the Ordnance Survey enlarged map on the Geograph website does, and uses contour intervals of 5m, with an uppermost contour ring of 105m and bwlch contouring between 70m – 75m.  These contours give the hill a minimum of 30m of drop and contour interpolation prior to the survey with the Trimble suggested that the hill had 34m – 35m of drop. 

The survey with the Trimble GeoXH 6000 resulted in a 105.3m summit height and with the bwlch estimated to be 71m high; these values give the hill c 34m of drop.


The full details for the hill are:

Cardinal Hill:  Moel y Gamelin

Summit Height:  105.4m

Name:  Pandy Bank

OS 1:50,000 map:  117

Summit Grid Reference:  SJ 33630 53882

Drop:  c 34m


Pandy Bank (SJ 336 538) the new 100m Twmpau

For details on the survey that resulted in this hill being included as a 100m P30 Twmpau please click {here}

Myrddyn Phillips (April 2016)






Mapping Mountains – Hill Reclassifications – Y Pedwarau


Moel Fodiar (SH 978 680)

There has been a deletion of a 390m Sub-Pedwar by surveying with the Trimble.  The hill was listed in the Sub list as it has a 390m spot height at the summit on Ordnance Survey maps, giving the minimum qualifying height for 390m Sub-Pedwar status.  The hill has a 273m spot height at its bwlch on the Ordnance Survey enlarged map on the Geograph website, giving it 117m of drop.

The 390m Sub-Pedwarau are the hills at or above 390m in height and below 400m in height with a minimum 30m of drop, with the 390m Double Sub-Pedwarau being the hills within the same height band and with a drop between 20m and below 30m.

The hill is situated in the northern part of Mynydd Hiraethog, and is positioned to the west of Dinbych (Denbigh) and to the east of the Afon Aled.

The name of the hill is Moel Fodiar and it can be easily accessed from a minor road west of the summit that reaches over 340m in height, the summit can also be approached from the east from a minor road that reaches 310m in height.  The upper section of the hill is prescribed as open access and the summit has extensive views.

The summit of the hill has two tumuli aligned west – east from one another, both were surveyed with the Trimble GeoXH 6000, with the higher easterly tumulus having a small cairn on it.  The survey results are:

Western tumulus:  389.595m, converted to OSGM15

Eastern tumulus:  389.762m, converted to OSGM15

Therefore, Moel Fodiar is the first hill to be deleted from the listing of 390m Sub-Pedwar hills since publication of the list in May 2013 by Europeaklist, and the list of Y Pedwarau will be updated accordingly.  The list of Pedwar hills is available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Mwdwl Eithin

Summit Height:  389.8m

Name:  Moel Fodiar

OS 1:50,000 map:  116

Summit Grid Reference:  SH 97828 68002

Drop:  117m


Moel Fodiar (SH 978 680) now deleted from the 390m Sub-Pedwarau

For details on the survey that deleted Moel Fodiar from 390m Sub-Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (April 2016)







Mapping Mountains – Hill Reclassifications – Y Pedwarau



Craig y Garreg Lwyd (SH 730 427)

Hill Reclassifications post for Craig y Garreg Lwyd

Survey post for Craig y Garreg Lwyd  

The full details for the hill are:

Cardinal Hill:  Graig Goch

Summit Height:  473.4m

Name:  Craig y Garreg-lwyd

OS 1:50,000 map:  124

Summit Grid Reference:  SH 73044 42742

Drop:  29.9m


Myrddyn Phillips and Aled Williams (March 2016)






Mapping Mountains – Hill Reclassifications – Y Pedwarau



Drysgol (SN 946 744)

Hill Reclassifications post for Drysgol

Survey post for Drysgol

The full details for the hill are:

Cardinal Hill:  Garreg Lwyd

Summit Height:  483.6m (converted to OSGM15)

Name:  Drysgol

OS 1:50,000 map:  136, 147

Summit Grid Reference:  SN 94630 74415

Drop:  29.2m


Myrddyn Phillips and Aled Williams (March 2016)






Mapping Mountains – Hill Reclassifications – 100m Twmpau



Pentre Clawdd Gorse (SJ 311 442)

Hill Reclassifications post for Pentre Clawdd Gorse

Bwlch survey post for Pentre Clawdd Gorse  

Summit survey post for Pentre Clawdd Gorse    


The full details for the hill are:

Cardinal Hill:  Moel y Gamelin

Summit Height:  142.0m (converted to OSGM15)

Name:  Pentre Clawdd Gorse

OS 1:50,000 map:  117

Summit Grid Reference:  SJ 311 442

Drop:  30.3m


Myrddyn Phillips (February 2016)





Mapping Mountains – Hill Reclassifications – 200m Twmpau


Gallt y Celyn (SH 811 542) 

There has been a reclassification of status within the 200m Twmpau (thirty welsh metre prominences and upward) hill list instigated by a survey with the Trimble.   The hill has a convoluted history of reclassification and is situated just to the north of the A 5 and southward of the small community of Capel Garmon and south-eastward of the town of Betws-y-coed, and is positioned in the Mynydd Hiraethog range of hills.

The Trimble GeoXH 6000 survey that resulted in this hill’s reclassification from a Sub-Twmpau to a 200m P30 Twmpau was conducted in the afternoon of the 23th February 2016 on a beautiful winter’s day in good, dry and sunny conditions.

The hill is unnamed on current Ordnance Survey maps but is given as a part of Gallt y Celyn on the Tithe map and therefore this name is deemed appropriate to use.

Access to the hill is relatively easy as there is a public footpath approaching from the north which can be accessed from Capel Garmon, and also one from the south-east which can be accessed from a steep minor lane that heads north from the A 5.  The summit of the hill is only a short distance from where these footpaths meet and is on open access land.

The hill has a convoluted history of inclusion and exclusion from the 200m P30 Welsh list as it was originally included in the ‘Hills to Survey’ Sub-List that accompanied the main P30 lists on Geoff Crowder’s v-g.me website.  This Sub-List was reliant upon the details on Ordnance Survey maps being correct and did not take in contour interpolation for inclusion within the main P30 list.  After the Sub-List was standardised and contour interpolation used, the hill was reclassified to a P30 with c 30m of drop, based on a 258m summit spot height and an estimated bwlch height of c 238m.  To complicate matters this hill had twin tops, both given a 258m spot height on Ordnance Survey maps, these tops were surveyed with the Trimble on the 24th December 2013 with the following results:


257.610m at SH 81121 54259, converted to OSGM15

257.093m at SH 81007 54476, converted to OSGM15


Although the twin tops had been separated the bwlch was not surveyed and as it was estimated to be c 238m high, the drop for this hill was accepted as being just under the qualifying minimum drop of 30m and therefore the hill re-joined the ranks of Subs.

It was always my intention to survey the bwlch and determine once and for all the classification of the hill, and on the 23rd February I found myself immersed in a water laden bog gathering the allotted five minutes of data.  This survey resulted in a bwlch height of 227.5m (227.529m, converted to OSGM15), which gave this hill 30.1m (30.081m) of drop, and therefore it re-joins the ranks of P30 Twmpau hills.


The full details for the hill are:

Cardinal Hill:  Mwdwl Eithin

Summit Height:  257.6m (converted to OSGM15)

Name:  Gallt y Celyn

OS 1:50,000 map:  116

Summit Grid Reference:  SH 811 542

Drop:  30.1m


Gallt y Celyn (SH 811 542) in the centre foreground of this photograph and which has now been re-instated as a 200m P30 Twmpau.  Photograph taken from the summit of Dinas Mawr (SH 808 539)

For details on the survey that resulted in this hill being reclassified from a 200m Sub-Twmpau to a 200m P30 Twmpau please click {here} for summit and {here} for the bwlch survey.

Myrddyn Phillips (February 2016)






Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales



Moel y Gadair (SH 521 391)

Hill Reclassifications post for Moel y Gadair

Summit survey post for Moel y Gadair

Bwlch survey post for Moel y Gadair

The full details for the hill are:

Group:  Moel Hebog

Name:  Moel y Gadair

Dominance:  N/A

OS 1:50,000 map:  124

Summit Grid Reference:  SH 52165 39135

Summit Height:  66.7m (converted to OSGM15)

Drop Summit to Bwlch:  28.5m

Drop Bwlch to ODN:  38.1m (converted to OSGM15) 


Myrddyn Phillips (February 2016)






Mapping Mountains – Hill Reclassifications – 30m-99m Twmpau



Moel y Gadair (SH 521 391)

Hill Reclassifications post for Moel y Gadair

Summit survey post for Moel y Gadair

Bwlch survey post for Moel y Gadair

The full details for the hill are:

Cardinal Hill:  Moel Hebog

Summit Height:  66.7m (converted to OSGM15)

Name:  Moel y Gadair

OS 1:50,000 map:  124

Summit Grid Reference:  SH 521 391

Drop:  28.5m


Myrddyn Phillips (February 2016)






Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales



The full details for the hill are:

Group:  Moel Hebog

Name:  Moelfre

Dominance:  49.00%

OS 1:50,000 map:  124

Summit Grid Reference:  SH 55830 37553

Summit Height:  74.1m (converted to OSGM15)

Drop Summit to Bwlch:  36.3m

Drop Bwlch to ODN:  37.8m (converted to OSGM15) 


Myrddyn Phillips (February 2016)






Mapping Mountains – Hill Reclassifications – Y Pedwarau



Foelas Fechan (SH 854 596)

Hill Reclassifications post for Foelas Fechan

Survey post for Foelas Fechan

The full details for the hill are:

Cardinal Hill:  Mwdwl Eithin

Summit Height:  415.8m (converted to OSGM15)

Name:  Foelas Fechan

OS 1:50,000 map:  116

Summit Grid Reference:  SH 85408 59650

Drop:  18.6m


Myrddyn Phillips and Aled Williams (February 2016)





Mapping Mountains – Hill Reclassifications – 200m Twmpau



Bwlch Clump (SJ 170 108)

Hill Reclassifications post for Bwlch Clump

Survey post for Bwlch Clump  


The full details for the new status of this hill are:

Cardinal Hill:  Carnedd Wen

Summit Height:  263.9m (converted to OSGM15)

Name:  Bwlch Clump

OS 1:50,000 map:  125

Summit Grid Reference:  SJ 17063 10813

Drop:  29.1m (converted to OSGM15)


Myrddyn Phillips (January 2016)






Mapping Mountains – Hill Reclassifications – 200m Twmpau



Broniarth (SJ 166 120)

Hill Reclassifications post for Broniarth 

Survey post for Broniarth


The full details for the hill are:

Cardinal Hill:  Carnedd Wen

Summit Height:  267.9m

Name:  Pt. 268m, Broniarth

OS 1:50,000 map:  125

Summit Grid Reference:  SJ 16648 12055

Drop:  21.5m


Myrddyn Phillips (January 2016)






Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales


Pt. 68.2m (SH 383 949)

There has been a reclassification from the listing of Y Trechol – The Dominant Hills of Wales due to a survey with the Trimble GeoXH 6000 and which has resulted in the hill being taken out of the Dominant list and included in the Lesser Welsh Dominants list.  The hill is in the first Group to be published in this new hill list; Ynys Môn, and is situated on the northern coast of the island and positioned to the north-east of the small community of Cemaes.

This Hill Reclassifications notification has awaited the listing of Y Trechol – the Dominant Hills of Wales to begin its publication, but the survey result is retrospective as the Trimble GeoXH 6000 survey that resulted in this hill’s reclassification was conducted on the 7th September 2014 on a beautiful sunny day in the company of Alex Cameron.

The hill can be accessed from its west or east via the Wales Coast Path which goes close to its summit, with its eastern approach on this path being joined by a public footpath that gives access toward the hill from its south-east.  However, if wanting a slightly extended walk this hill can be combined with its neighbours of Dinas Gynfor (SH 391 950) and Graig Wen (SH 397 947).

The hill is unnamed on current Ordnance Survey maps and I do not know a locally known name for it or one of historical relevance and therefore the point (Pt.) notation is being used for the hill.

The hill had been listed with 50.75% of Dominance and was therefore included in the main Dominant list.  This was based on it having a 67m summit spot height on the Ordnance Survey enlarged mapping on the Geograph website and an estimated bwlch height of c 33m based on bwlch contouring between 30m – 35m, these values gave the hill a prominence of c 34m, which was enough for it to sneak into the main Dominant list.

The survey with the Trimble GeoXH 6000 resulted in a 68.2m (converted to OSGM15) summit height and a 34.2m (converted to OSGM15) bwlch height, giving this hill a Dominance of only 49.85% and confirming its reclassification from The Dominant Hills of Wales list to the Lesser Welsh Dominants list.


The full details for the hill are:

Group:  Ynys Mon

Name:  Pt. 68m

Dominance:  49.85% (Lesser Welsh Dominant status confirmed)

OS 1:50,000 map:  114

Summit Grid Reference:  SH 38337 94993

Summit Height:  68.2m (converted to OSGM15)

Drop Summit to Bwlch:  34.0m

Drop Bwlch to ODN:  34.2m 


Pt. 68.2m (SH 383 949) - now reclassified to the Lesser Welsh Dominants list.

For details on the survey that resulted in this hill being reclassified to a Lesser Welsh Dominant hill please click {here}

Myrddyn Phillips (December 2015)





Mapping Mountains – Hill Reclassifications – 100m Twmpau


The full details for the hill are:

Cardinal Hill:  Moel y Gamelin

Summit Height:  153.5m (converted to OSGM15)

Name:  The Pimple

OS 1:50,000 map:  117

Summit Grid Reference:  SJ 29984 47262

Drop:  25.2m


Myrddyn Phillips (October 2015)






Mapping Mountains – Hill Reclassifications – The 500-Metre Tops of Ireland

There has been a reclassification to The 500-Metre Tops of Ireland list due to a Trimble survey conducted by John Fitzgerald.  This is the first reclassification to this list since its data were re-evaluated for publication on the Database of British and Irish Hills (DoBIH).  The hill is situated in the western lands of the Beara Peninsula in the south-west of Ireland, and is positioned south-west of the small community of Lauragh and eastward of Ardgroom.
The Trimble GeoXH 6000 survey conducted by John Fitzgerald that resulted in the reclassification of this hill from the main 500-Metre P30 list to the 500-Metre Sub-List was conducted on 30th May 2015 in a rainstorm and fog.

Access to the hill can be gained from its easterly ridge that ascends over the 356m top of Cummeennahillan, or an extended circuit can be combined over the hills of Lackabane (Leaca Bhan), Eskatarriff East Top, Easkatarriff (Eisc an Tairbh), Coomacloghane (Com an Chlochain), Tooth Mountain (Cnoc na bhFiacal), Knocknaveacal South Top and finally Knocknaveacal North Top.

The hill is named Knocknaveacal North Top and its summit is positioned at V 744 562.  The hill was listed with c 31m of drop based on a 513m summit spot height and an estimated col height of c 482m.  To the immediate south of this hill is another hill that is given a 513m spot height on OSI maps, this southern top is included in the 500-Metre Sub-List with c 29m of drop and is named Knocknaveacal South Top.  When re-evaluating data for this list’s publication by DoBIH these two hills proved of interest as they could have been listed as either two qualifying P30s, one twin top P30, one qualifying P30 and one Sub (either way round), or one twin top Sub.

The survey by John Fitzgerald with the Trimble GeoXH 6000 resulted in a 509.1m summit height and a col height of 482.6m at V 74321 56081.  The dramatic decrease in summit height from the 513m map height to the 509.1m surveyed height and the surveyed col height of 482.6m gives this hill a drop value of only 26.5m.

This now brings the overall total for The 500-Metre Tops of Ireland to 201, please click {here} to access the list on DoBIH.


The full details for the hill are:

Cardinal Hill:  Hungry Hill

Summit Height:  509.1m

Name:  Knocknaveacal North Top

OSI 1:50,000 map:  84

Summit Grid Reference:  V 74439 56269

Drop:  26.5m


Michael Dewey and Myrddyn Phillips (November 2015)






Mapping Mountains – Hill Reclassifications – 100m Twmpau

The full details for the hill are:

Cardinal Hill:  Moel y Gamelin

Summit Height:  153.6m

Name:  Bersham Bank

OS 1:50,000 map:  117

Summit Grid Reference:  SJ 31159 48116

Drop:  c 51m


Myrddyn Phillips (October 2015)






Mapping Mountains – Hill Reclassifications – 700m Twmpau


Bera Mawr (SH 674 682)

There has been a deletion of a 700m Twmpau (thirty welsh metre prominences and upward) hill by surveying with the Trimble.   The hill is situated in the north-western part of the Carneddau in Eryri, and is positioned south of Llanfairfechan and eastward of Bethesda.

These details are retrospective as the Trimble GeoXH 6000 survey that resulted in the reclassification of this hill from 700m Twmpau to 700m Sub-Twmpau was conducted on 10th March 2014 on a bright early spring day.

The hill is relatively remote for a Welsh hill and it can be accessed from above Abergwyngregyn to the north, or from the upper parts of Bethesda to the west or from the main Carneddau ridge to its south-east.  Most approaches enable the walker to visit other hills on the way.

The hill is named Bera Mawr and its summit is positioned at SH 674 682.  The hill was listed with c 31m of drop based on a 794m summit spot height and an estimated bwlch height of c 763m.  The area of the bwlch is comprised of relatively short grass and the set-up position of the Trimble for the bwlch survey was given a 0.3m margin of uncertainty for height.

The survey with the Trimble GeoXH 6000 resulted in a 793.6m (converted to OSGM15) summit height with Estimated Accuracies of 15-30cm: 55.22%, this figure is below the average and it would be good on my next visit to get another summit data set.  The bwlch survey resulted in a 763.9m (converted to OSGM15) height and the normal Estimated Accuracies of 5-15cm: 100.00%.

This now brings the overall total for the 700m Twmpau hills to 33 and the total for the 700m Sub-Twmpau hills to 5,  please click {here} to access the list and {here} for its detailed Introduction.


The full details for the hill are:

Cardinal Hill:  Carnedd Llywelyn

Summit Height:  793.6m (converted to OSGM15)

Name:  Bera Mawr

OS 1:50,000 map:  115

Summit Grid Reference:  SH 67482 68270

Drop:  29.7m


Gathering data at the summit of Bera Mawr, which resulted in this hill being reclassified from a 700m Twmpau to a 700m Sub-Twmpau

For details on the survey that reclassified this hill from 700m Twmpau to 700m Sub-Twmpau please click {here}

Myrddyn Phillips (March 2014)






Mapping Mountains – Hill Reclassifications – Y Pellennig – The Remotest Hills of Wales

The full details for the hill are:

Cardinal Island:  Ynysoedd y Moelrhoniaid

Summit Height:  15.2m

Name:  Ynys Arw

OS 1:50,000 map:  114

Summit Grid Reference:  SH 266 945

Drop:  15.2m


Myrddyn Phillips and Aled Williams (September 2015)





Mapping Mountains – Hill Reclassifications – Y Pedwarau

The full details for the hill are:

Cardinal Hill:  Foel Fadian

Summit Height:  404.2m (converted to OSGM15)

Name:  Banc Bronderwgoed

OS 1:50,000 map:  135, 136

Summit Grid Reference:  SN 871 987

Drop:  27.7m


Myrddyn Phillips and Aled Williams (September 2015)






Mapping Mountains – Hill Reclassifications – 500m Twmpau


Twyn Walter (SN 828 175)

There has been a deletion of a 500m Twmpau hill by surveying with the Trimble.   The hill is situated in the south-eastern lands of Y Mynydd Du in South Wales, and is positioned north-west of Glyntawe and the A4067 as it speeds its way between Pontsenni (Sennybridge) to the north and Ystradgynlais to the south.

These details are retrospective as the Trimble GeoXH 6000 survey that resulted in the reclassification of this hill from 500m Twmpau to 500m Sub-Twmpau was conducted on 10th July 2014, in the company of Mark Trengove when we visited the Remotest spot in mainland Wales, as well as the Remotest hill in mainland Wales.

Access to the hill from the south-east of its summit is relatively easy as a broad path ascends from near to the Campsite entrance that is adjacent to Dan yr Ogof Showcaves.  As height is gained this path resembles a vehicle track and eventually heads north-west into the remote grasslands of Mynydd Du, on its way it passes within approximately 260 metres of the summit. 
    
The hill is named Twyn Walter (written as Twynwalter on current Ordnance Survey maps) and its summit is positioned at SN 828 175.  The hill was listed with c 31m of drop based on a 509m summit spot height and an estimated bwlch height of c 478m.  The area of the bwlch has a number of sink holes on it which complicates pinpointing where the critical bwlch is positioned.  However, contouring suggests that there are two distinct positional possibilities for where this critical bwlch lies, these are at SN 82525 17584 and SN 82611 17986.

The survey with the Trimble GeoXH 6000 resulted in a 502.1m (converted to OSGM15) summit height, unfortunately daylight was quickly disappearing and this was the last survey of a long day on the hill and this dictated that the two options for the position of the bwlch were not surveyed.  However, the dramatic decrease in summit height from the 509m map height to the 502.1m (converted to OSGM15) surveyed height and the estimated bwlch height from contour interpolation of c 478m gives this hill a drop value of only c 24m.

This now brings the overall total for the 500m Twmpau hills to 226, please click {here} to access the list and {here} for its detailed Introduction.


The full details for the hill are:

Cardinal Hill:  Fan Brycheiniog

Summit Height:  502.1m (converted to OSGM15)

Name:  Twyn Walter

OS 1:50,000 map:  160

Summit Grid Reference:  SN 82837 17506

Drop:  c 24m


Gathering data at the summit of Twyn Walter, which resulted in this hill being reclassified from a 500m Twmpau to a 500m Sub-Twmpau

For details on the survey that reclassified this hill from 500m Twmpau to 500m Sub-Twmpau please click {here}

Myrddyn Phillips (July 2014)






Mapping Mountains – Hill Reclassifications – Y Pedwarau

The full details for the hill are:

Cardinal Hill:  Cefn Manmoel

Summit Height:  403.9m (converted to OSGM15)

Name:  Bryn Serth

OS 1:50,000 map:  161

Summit Grid Reference:  SO 147 109

Drop:  25.4m


Myrddyn Phillips and Aled Williams (August 2015)






Mapping Mountains – Hill Reclassifications – Yr Uchafion

The full details for the hill are:

Cardinal Hill:  Moelwyn Mawr

Summit Height:  649.7m

Name:  Pt. 650m

OS 1:50,000 map:  115

Summit Grid Reference:  SH 660 452

Drop:  14.8m


Myrddyn Phillips and Aled Williams (June 2015)





Mapping Mountains – Hill Reclassifications – 30m–99m Twmpau

The full details for the hill are:

Cardinal Hill:  Moel Hebog

Summit Height:  49.6m (converted to OSGM15)

Name:  Castell Cricieth

OS 1:50,000 map:  123

Summit Grid Reference:  SH 500 377

Drop:  30.3m


Myrddyn Phillips (June 2015)






Mapping Mountains – Hill Reclassifications – 30m–99m Twmpau


The full details for the hill are:

Cardinal Hill:  Moel Hebog

Summit Height:  53.3m (converted to OSGM15)

Name:  Carreg yr Eryr

OS 1:50,000 map:  124

Summit Grid Reference:  SH 526 378

Drop:  30.9m


Myrddyn Phillips (June 2015)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


The full details for the hill are:

Cardinal Hill:  Gorllwyn

Summit Height:  466.4m (converted to OSGM15)

Name:  Wenallt

OS 1:50,000 map:  147

Summit Grid Reference:  SN 933 571

Drop:  28.3m


Myrddyn Phillips and Aled Williams (May 2015)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 422.3m (SO 073 822)

Hill Reclassifications post for Pt. 422.3m

Survey post for Pt. 422.3m


The full details for the hill are:

Cardinal Hill:  Pegwn Mawr

Summit Height:  422.3m (converted to OSGM15)

Name:  Pt. 422.3m

OS 1:50,000 map:  136

Summit Grid Reference:  SO 073 822

Drop:  29.0m


Myrddyn Phillips and Aled Williams (May 2015)






Mapping Mountains – Hill Reclassifications – Y Pellennig – The Remotest Hills of Wales


The full details for the hill are:

Cardinal Island:  Ynys Enlli

Summit Height:  20.0m (converted to OSGM15)

Name:  Pen Diban

OS 1:50,000 map:  123

Summit Grid Reference:  SH 112 205

Drop:  15.0m


Myrddyn Phillips and Aled Williams (April 2015)






Mapping Mountains – Hill Reclassifications – 300m Twmpau


Pen y Gaer (SO 139 976) 

There has been a new addition to the 300m Twmpau list due to a recent survey with the Trimble GeoXH 6000.  The evidence for the promotion of this hill is marginal, but until more accurate information is at hand the hill has been promoted from the ranks of the 200m Twmpau to that of the 300m Twmpau list.


The raw processed survey result is 300.002m converted to OSGM15

The margin of uncertainty for the height in relation to the position of the Trimble on the summit is 0.05m.

The precision of the equipment is +/- 0.15m.

The accuracy of the equipment is 0.1m.

Therefore the raw result should be rounded to one decimal place; 300.0m


The name of the hill is Pen y Gaer (SO 139 976) and it is situated in the Carnedd Wen range of hills and is positioned between the small communities of Betws Cedewain and Pentrellifior.


The full details for the hill are:

Cardinal Hill:  Carnedd Wen

Summit Height:  300.0m (converted to OSGM15)

Name:  Pen y Gaer

OS 1:50,000 map:  136

Summit Grid Reference:  SO 139 976

Drop:  88m


Pen y Gaer (SO 139 976) the new 300m Twmpau
For details on the survey that promoted this hill to 300m Twmpau status please click {here}

Myrddyn Phillips (2015)





Mapping Mountains – Hill Reclassifications – 30m – 99m Twmpau


Ynys Tywyn (SH 571 385)   

There has been a new Sub-Twmpau recently added to the 30m – 99m list.  The hill is Ynys Tywyn (SH 571 385) and is situated at the end of the Cob in Porthmadog.  It has a small uppermost 20m contour ring on Ordnance Survey maps, but no spot height.  A recent survey with the Trimble GeoXH 6000 confirms that the hill is over 20m high and therefore it enters the Sub-List as it is the high point of an island that is now connected to Porthmadog by the Cob.  The summit is crowned by a large flat rock and gorse bushes and has fine views over the Afon Glaslyn to the higher mountains in Eryri.


The full details for the hill are:

Cardinal Hill:  Moel Hebog

Summit Height:  21.8m (converted to OSGM15)

Name:  Ynys Tywyn

OS 1:50,000 map:  124

Summit Grid Reference:  SH 571 385

Drop:  21.8m


Ynys Tywyn (SH 571 385) the new Sub-P30
For details on the survey that promoted this hill to 30m – 99m Sub-Twmpau status please click {here}

Myrddyn Phillips (2014)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Mynydd Poeth (SH 953 513)

There has been a new Pedwar recently discovered by surveying with the Trimble.  The hill is situated in the Mynydd Hiraethog and is positioned north of Cerrigydrudion and south of Llyn Brenig.

The hill is Mynydd Poeth (SH 953 513), it had two possibilities for the position of its critical bwlch, one to the west and another to its east, both leading to higher ground and both with bwlch contouring between 380m – 390m.

Mynydd Poeth (417m spot height on Ordnance Survey maps) had been listed as a Sub-Pedwar with c 29m of drop based on the critical bwlch being east of the summit at SH 957 509 and with a height of c 388m, with its western bwlch at SH 950 513 having an estimated height of c 387m.  The hill is currently listed as a Tump by Mark Jackson with 30m of drop based on its critical bwlch being placed at SH 950 512.


Each bwlch position was surveyed with the following results:

Eastern bwlch:  387.6m (converted to OSGM15) at SH 95707 50953.

Western bwlch:  386.9m (converted to OSGM15) at SH 95069 51315.


Although the estimation of each bwlch height is in good accordance with the survey result produced by the Trimble, the hill qualifies for Pedwar status as the known summit height has increased by 2.3m from its 417m map height at SH 95403 51068 to its summit position at SH 95375 51301 which has a height of 419.300m (converted to OSGM15).

This now brings the overall total for Y Pedwarau to 452 hills with five additions since publication of the list by Europeaklist in May 2013.  The hill will be added to Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Mwdwl-eithin

Summit Height:  419.3m (converted to OSGM15)

Name:  Mynydd Poeth

OS 1:50,000 map:  116

Summit Grid Reference:  SH 953 513

Drop:  31.7m


Mynydd Poeth (SH 953 513) the new Pedwar
For details on the survey that promoted this hill to Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)





Mapping Mountains – Hill Reclassifications – The Fours


The Cold Piece (SO 338 996)  

There has been a reclassification to the list of The Fours due to a recent survey with the Trimble GeoXH 6000.  The hill is positioned in Shropshire and situated between Corndon and the Stiperstones.

The hill is The Cold Piece (SO 338 996) and appears under its Cardinal Hill of the Stiperstones on page 24 of The Fours published by Europeaklist.  It is listed with an accompanying note (note number 256) which states ‘As the only absolute height found for the summit of this hill is 1,311ft (399.6m) from the OS 1:10,560 map, doubt is cast upon its qualification as an English 400m P30, but as current mapping has a small uppermost 400m ring contour the hill remains in the list for now’

That was prophetic!

This now brings the overall total for The Fours to 295 hills with this being the first major alteration since publication of the list by Europeaklist in December 2013.  Since publication the Subs have increased by two to 227 with the addition of West Nab (SK 266 939) which was discovered by Ed Gradwell and now the addition of The Cold Piece.

The hill is reclassified from The Fours list and will appear in the Subs in the 2nd edition that will be published by Europeaklist.  The list of The Fours is also available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Stiperstones

Summit Height:  399.5m (converted to OSGM15)

Name:  The Cold Piece

OS 1:50,000 map:  137

Summit Grid Reference:  SO 338 996

Drop:  57.5m


The Cold Piece (SO 338 996) reclassified from a Four to a 390m Sub-Four
For details on the survey that reclassified this hill from Four to 390m Sub-Four status please click {here}

Myrddyn Phillips and Aled Williams (2014)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 499.5m (SH 665 310)

There has been a new Pedwar recently discovered by surveying with the Trimble.  The hill is situated in some of the most uncompromising land in Wales as it is positioned on the central ridge of the northern Rhinogydd.  This ridge runs from Bwlch Tyddiad and the top of the Roman Steps in the south to the bwlch at the base of Clip beyond the summit of Craig Wion in the north.  The hill has been promoted from the Sub-Pedwar list where it was listed with c 27m of drop.  Unfortunately we still have no historical or local name for the hill, therefore it still follows the point notation, and is being listed as Pt. 499.5m.

This now brings the overall total for Y Pedwarau to 451 hills with four additions since publication of the list by Europeaklist in May 2013.  The hill will be added to Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Y Llethr

Summit Height:  499.5m (converted to OSGM15)

Name:  Pt. 499.5m

OS 1:50,000 map:  124

Summit Grid Reference:  SH 665 310

Drop:  30.3m


Pt. 499.5m (SH 665 310) the new Pedwar
For details on the survey that promoted this hill to Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Derlwyn (SH 588 586) 

There has been a ‘new’ Sub-Pedwar recently discovered by surveying with the Trimble.  The hill is named Derlwyn (SH 588 586) and is situated on the Llanberis ridge of Yr Wyddfa.  The summit area is crowned by small outcrops of rock and has fine views southward towards Crib y Ddysgl and Yr Wyddfa and eastward toward the high peaks of the Glyderau.

The hill will be added to Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Yr Wyddfa

Summit Height:  416.4m (converted to OSGM15)

Name:  Derlwyn

OS 1:50,000 map:  115

Summit Grid Reference:  SH 588 586

Drop:  20.4m


Derlwyn (SH 588 586) the new Sub-Pedwar


For details on the survey that promoted this hill to Sub-Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)





Mapping Mountains – Hill Reclassifications – 100m Twmpau


Castell Dinbych (SJ 051 657) 

There has been a new addition to the 100m Twmpau list due to a recent survey with the Trimble GeoXH 6000.  The hill is situated in the centre of Dinbych (Denbigh) in north-east Wales.  The hill is Castell Dinbych (Denbigh Castle in English).  The present construct is the remains of one of Edward 1’s fortifications after he visited his neighbours and asked them not to be so rebellious.  It is situated in an impressive position overlooking the town to the west and the Vale of Clwyd to the east.  In its time the castle must have been quite an imposing construction, one no doubt meant to subjugate.  The hill’s critical bwlch may be placed in someone’s living room beside a road named Bryn Stanley; I asked permission to place the Trimble on a fence post adjacent to a front garden as satellite reception may have been awkward inside the bungalow.


The full details for the hill are:

Cardinal Hill:  Mwdwl Eithin

Summit Height:  143.2m (converted to OSGM15)

Name:  Castell Dinbych

OS 1:50,000 map:  116

Summit Grid Reference:  SJ 051 657

Drop:  33.0m


Castell Dinbych (SJ 051 657), Trimble survey confirms promotion  to the 100m twmpau List
For details on the survey that promoted this hill to 100m Twmpau status please click {here}

Myrddyn Phillips (2014)





Mapping Mountains – Hill Reclassifications – 100m Twmpau


Bryn y Beili (SJ 235 643)

There has been a new addition to the 100m twmpau list due to a recent survey with the Trimble GeoXH 6000.  The hill is situated in the centre of Yr Wyddgrug (Mold) in north-east Wales.  The hill is Bryn y Beili (Bailey Hill in English), it is almost hidden from view when approaching from the ascending High Street as it rises behind the former Pendref Chapel and is surrounded by a high wall, trees and shrubs.  Bryn y Beili has the remains of a Norman castle on its summit which may have been built on a much earlier burial mound.  This hill lends its name to the current usage of Yr Wyddgrug and Mold as the name of the town; yr, gŵyddcrug (high hill, the prominent mound) in Cymraeg, and mont, hault in Norman French.  Bryn y Beili was proposed by Mark Trengove as a potential new P30 and involved an exciting survey as the Trimble GeoXH 6000 was run over by a car whilst surveying in the area of the bwlch.  Our second survey attained a good data set from the tree covered summit and was backed up with a basic levelling survey from the position of a spot height just below the summit.


The full details for the hill are:

Cardinal Hill:  Moel y Gamelin

Summit Height:  143.0m (converted to OSGM15)

Name:  Bryn y Beili

OS 1:50,000 map:  117

Summit Grid Reference:  SJ 235 643

Drop:  31.5m


Bryn y Beili (SJ 235 643), the new 100m twmpau

For details on the survey that promoted this hill to 100m Twmpau status please click {here}

Myrddyn Phillips (2014)






Mapping Mountains – Hill Reclassifications – Y Pedwarau


Craig y Ganllwyd (SH 707 258)

There has been a new Pedwar recently confirmed by surveying with the Trimble.  The hill is Craig y Ganllwyd (SH 707 258) in the Rhinogydd hills, it has an interesting history for summit height data, which is detailed below:


Ordnance Survey 1:2,500 map from 1888 – 1889:  1,411ft (430m)

Ordnance Survey 1:50,000 map:  c 430m uppermost ring contour

Ordnance Survey 1:25,000 map:  c 410m uppermost ring contour

Harvey Maps:  423m spot height

The bwlch contouring for the hill is between c 390m – c 400m with the Ordnance Survey enlarged Geograph map giving a spot height of 397m.


When compiling Y Pedwarau we listed the hill as a Sub-Pedwar with 26m of drop based on the 397m bwlch spot height and the 423m Harvey Maps summit spot height.

The Trimble has now determined that the hill has over 30m of prominence and should be included in Y Pedwarau.

The hill will be added to Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Y Llethr

Summit Height:  430.9m (converted to OSGM15)

Name:  Craig y Ganllwyd

OS 1:50,000 map:  124

Summit Grid Reference:  SH 707 258

Drop:  33.4m


Craig y Ganllwyd (SH 707 258) the new Pedwar
For details on the survey that promoted this hill to Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)






Mapping Mountains – Hill Reclassifications – Y Pedwarau


Carreg y Big (SN 902 909)

There has been a deletion of a Sub-Pedwar by surveying with the Trimble.  The hill was only listed in the Sub list as it has a 394m spot height at the bwlch and a 417m spot height at the summit on the Ordnance Survey enlarged Geograph map, giving a drop of 23m.  The spot height at the bwlch on the OS map is on a road, the critical bwlch is higher than this position.  The hill is Carreg y Big (SN 902 909) and is situated in the Pumlumon range.

The hill will be deleted from Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:



Cardinal Hill:  Foel Fadian

Summit Height:  417.0m (converted to OSGM15)

Name:  Carreg y Big

OS 1:50,000 map:  136

Summit Grid Reference:  SN 902 909

Drop:  19.7m



The Trimble GeoXH 6000 on the summit of Carreg y Big

For details on the survey that deleted this hill from Sub-Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)






Mapping Mountains – Hill Reclassifications – 300m Twmpau


Mynydd Derw Llwydion (SO 907 900)

There has been a new addition to the 300m Twmpau list due to a recent survey with the Trimble GeoXH 6000.  The hill sneaks in with 14 millimetres to spare!  This margin is within the uncertainty applied to the equipment and its positioning at the summit and the bwlch.  However, reclassifications are taking place in the listings I have compiled and those jointly done with Aled Williams, from best available evidence on the day and as this hill used to be listed with 29m of drop based on Ordnance Survey summit and bwlch spot heights, the Trimble data will be more accurate.  So until better evidence is produced the hill is promoted from the Sub list and becomes a new P30.  The hill is situated in the Pumlumon hills amongst many P30’s between Llyn Clywedog and Penffordd-las (Staylittle).


The full details for the hill are:


Cardinal Hill:  Foel Fadian

Summit Height:  388.1m (converted to OSGM15)

Name:  Mynydd Derw Llwydion

OS 1:50,000 map:  136

Summit Grid Reference:  SN 90721 90069

Drop:  30.0m


The Trimble GeoXH 6000 on the summit of Mynydd Derw Llwydion, the new 300m Twmpau
For details on the survey that promoted this hill to 300m Twmpau status please click {here}

Myrddyn Phillips (2014)





Mapping Mountains – Hill Reclassifications – Y Pedwarau




The full details for the hill are:

Cardinal Hill:  Graig Goch

Summit Height:  415.6m (converted to OSGM15)

Name:  Bryn Glas

OS 1:50,000 map:  124

Summit Grid Reference:  SH 73505 42086

Drop:  21.7m


Myrddyn Phillips and Aled Williams (2014)





Mapping Mountains – Hill Reclassifications – Y Pedwarau


Cefn Perfa (SO 173 579)

There has been a ‘new’ Pedwar recently confirmed by line survey conducted by G&J Surveys.  This was after a basic levelling survey in 2003 gave the hill 97ft / 29.6m of drop.  Since then it has been surveyed by the Trimble GeoXH 6000 with a result of 30.04m of drop, and now it has been surveyed by the Leica GS15 and a second survey by the Trimble with 30.06m and 30.09m of drop respectively.  The line survey (most accurate method) determined that the hill has 30.06m of drop and therefore it is confirmed as a ‘new’ Pedwar.  Few 400m hills have ever seen so much surveying attention paid to them.   The hill is Cefn Perfa (SO 173 579) and is situated in the Fforest Glud hills on the outskirts of Llanfihangel Nant Melan.

The hill will be added to Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:


Cardinal Hill:  Gwaun Ceste

Summit Height:  411.2m (converted to OSGM15)

Name:  Cefn Perfa

OS 1:50,000 map:  148

Summit Grid Reference:  SO 173 579

Drop:  30.1m



Cefn Perfa (SO 173 579) the new Pedwar
For details on the survey that promoted this hill to Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)






Mapping Mountains – Hill Reclassifications – Y Pedwarau


Moelfre (SO 121 759)

There has been a deletion of a Sub-Pedwar by surveying with the Trimble.  The hill was only listed in the Sub list as it has a 455m spot height at the bwlch on the Ordnance Survey enlarged Geograph map and a 475m spot height at the summit, giving the minimum qualifying drop for Sub status of 20m.  The hill is Moelfre (SO 121 759) and is situated in the Beacon Hill range.

The hill will be deleted from Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:


Cardinal Hill:  Gors Lydan

Summit Height:  476.0m (converted to OSGM15)

Name:  Moelfre

OS 1:50,000 map:  136, 148

Summit Grid Reference:  SO 121 759

Drop:  19.8m



The upper slopes of Moelfre from the area of its bwlch
For details on the survey that deleted this hill from Sub-Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)







Mapping Mountains – Hill Reclassifications – Y Pedwarau


Y Garn (SH 758 375)

There has been a ‘new’ Pedwar recently discovered by surveying with the Trimble.  The hill has a convoluted history of appearing (or not appearing in some cases) in P30 listings to the 400m hills of Wales.  The Trimble has now determined that the hill has over 30m of prominence and should be included in Y Pedwarau.  The hill is Y Garn (SH 758 375) and is situated in the Arennig mountains to the west of Llyn Tryweryn (SH 788 385).

The hill will be added to Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:


Cardinal Hill:  Graig Goch

Summit Height:  474.2m (converted to OSGM15)

Name:  Y Garn

OS 1:50,000 map:  124

Summit Grid Reference:  SH 758 375

Drop:  31.2m


Y Garn (SH 758 375) the new Pedwar
For details on the survey that promoted this hill to Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)







Mapping Mountains – Hill Reclassifications – Y Pedwarau


390m Double Sub-Pedwarau

Within the publication of Y Pedwarau (Europeaklist May 2013) we listed 16 hills that fail to qualify for the main list by 10 metres or less of height and by ten metres or less of drop.  These hills are known as the 390m Double Sub-Pedwar hills.  These 16 hills are listed below with the page they appear on in the Europeaklist booklet, height, name, 1:50,000 map number, summit grid reference and drop being detailed.


Page 11    c 393m    Pt. c 393m    116    SH 955 525    c 25m

Page 16    395m    Pen y Bwlch-coch    124    SH 751 159    26m

Page 19    396m    Banc y Gorlan    136    SH 922 037    c 29m

Page 19    394m    Allt y Genlli    136    SN 985 950    27m

Page 19    396m    Bryn y Gadair    136    SN 956 942    c 22m

Page 20    390m    Pen y Gaer    136    SN 908 868    c 26m

Page 20    391m    Mynydd Ponterwyd    135    SN 734 813    c 22m

Page 23    395m    Birches    136, 148    SO 184 790    c 27m

Page 23    391m    Rhos Hill    137, 148    SO 259 695    c 28m

Page 25    395m    Dunn’s Rhos    136, 148    SO 177 684    c 26m

Page 26    392m    Bryn Mawr    135, 147    SN 773 721    c 24m

Page 26    399m    Dyrys Du    147    SN 803 509    c 20m

Page 27    c 394m    Banc Melyn    146    SN 547 401    c 28m

Page 28    c 390m    Allt y Gest    147    SN 897 528    c 26m

Page 31    391m    Pt. 391m, Cefn Bach    160    SO 003 387    c 22m

Page 33    391m    Mynydd Maendy    170    SS 962 896    c 23m


Since the publication of Y Pedwarau a further 12 390m Double Sub-Pedwar hills have been identified.  These hills will appear in the 2nd edition of Y Pedwarau when published by Europeaklist, the details for each hill appear below:


Cardinal Hill:  Mwdwl-eithin
   
Summit Height:  c 390m

Name:  Boncyn Nadroedd

OS 1:50,000 map:  116 
  
Summit Grid Reference:  SJ 027 540

Drop:  c 23m



Cardinal Hill:  Mwdwl-eithin  
      
Summit Height:  399m

Name:  Derwydd Bach

OS 1:50,000 map:  116 
  
Summit Grid Reference:  SJ 017 503

Drop:  c 27m



Cardinal Hill:  Arennig Fawr
 
Summit Height:  392m

Name:  Ffridd Felen

OS 1:50,000 map:  124, 125 

Summit Grid Reference:  SH 855 388

Drop:  c 21m



Cardinal Hill:  Craig Berwyn 

Summit Height:  c 395m

Name:  Cefn Uchaf

OS 1:50,000 map:  117 

Summit Grid Reference:  SJ 249 402

Drop:  c 21m



Cardinal Hill:  Carreg y Big
 
Summit Height:  396m

Name:  Carreg y Frân

OS 1:50,000 map:  125
 
Summit Grid Reference:  SH 961 140

Drop:  20m



Cardinal Hill:  Carreg y Big 

Summit Height:  399m

Name:  Ffridd Dyfnant

OS 1:50,000 map:  125
 
Summit Grid Reference:  SH 997 164

Drop:  21m



Cardinal Hill:  Mynydd yr Hewyrch
 
Summit Height:  393m

Name:  Pt. 393m 

OS 1:50,000 map:  124
 
Summit Grid Reference:  SH 796 120

Drop:  24m



Cardinal Hill:  Garreg Lwyd 

Summit Height:  398m

Name:  Craig Cefn Llech

OS 1:50,000 map:  136, 147
 
Summit Grid Reference:  SN 952 771

Drop:  23m



Cardinal Hill:  Glascwm Hill 

Summit Height:  394m

Name:  Pt. 394m, The Begwns

OS 1:50,000 map:  148, 161
 
Summit Grid Reference:  SO 144 445

Drop:  c 20m



Cardinal Hill:  Clepyn Melyn 

Summit Height:  393m

Name:  Pt. 393m

OS 1:50,000 map:  147, 160 

Summit Grid Reference:  SN 998 432

Drop:  c 20m



Cardinal Hill:  Clepyn Melyn 

Summit Height:  399m

Name:  Pt. 399m

OS 1:50,000 map:  160
 
Summit Grid Reference:  SO 027 385

Drop:  c 21m



Cardinal Hill:  Werfa
 
Summit Height:  399m

Name:  Craig Rhiw Berfa

OS 1:50,000 map:  170
 
Summit Grid Reference:  SS 946 906

Drop:  c 21m 



Myrddyn Phillips and Aled Williams (February 2014)







Mapping Mountains – Hill Reclassifications – Y Pedwarau


Pt. 452.4m (SJ 229 443)

There has been a ‘new’ Sub-Pedwar recently discovered by surveying with the Trimble.  Aled and I have researched the area of land where the hill is situated and cannot find an appropriate name for it, either through historical document or from local knowledge.  Therefore we have used the Pt. notation for its name.  The hill is Pt 452.4m (SJ 229 443) and is situated in the Bryniau Clwyd on the southerly ridge of Mynydd Eglwyseg (SJ 231 464).

The hill will be added to Y Pedwarau list in the 2nd edition that will be published by Europeaklist.  The list of Pedwar hills is also available from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Moel y Gamelin

Summit Height:  452.4m (converted to OSGM15)

Name:  Pt. 452.4m

OS 1:50,000 map:  117

Summit Grid Reference:  SJ 229 443

Drop:  22.6m



The summit cairn on the new Sub-Pedwar; Pt. 452.4m (SJ 229 443)

For details on the survey that promoted this hill to Sub-Pedwar status please click {here}

Myrddyn Phillips and Aled Williams (2014)






Mapping Mountains - Hill Reclassifications - 30m - 99m Twmpau


Ynys Glog (SH 596 398) and Ynys Berfedd (SH 599 398)   

There have been four ‘new’ Welsh ‘island’ P30 hills recently discovered.  All are associated with Aled Williams, two of which are detailed below; Ynys Glog and Ynys Berfedd.  Whilst the other two; both known as Ynys Hir (SH 566 398 and SH 566 396) were accepted in to the ranks of Twmpau hills due to being surveyed with the Trimble.  Aled considered both as suitable candidates for surveying with a high chance of promotion, and had a ‘hunch’ that the c 20m height for each hill on the Ordnance Survey enlarged Geograph map was incorrect.

A note from Aled:

Two New P30 Hills

Analysis of OS enlarged mapping on the Geograph website confirms two P30 hills that are absent from both the '30-99m Twmpau' list by Myrddyn Phillips (2003) and the 'Tumps' list by Mark Jackson (2009). I bring this information to the attention of the authors.

Name: Ynys Glog
Height: 40.6m (converted to OSGM15)
Drop: 32.7m (converted to OSGM15)
Grid Reference: SH 59647 39826

Name: Ynys Berfedd
Height: 42.9m (converted to OSGM15)
Drop: 36.1m (converted to OSGM15)
Grid Reference: SH 59943 39865

Aled Williams (03/02/2014).

The discovery of ‘new’ P30’s is not a rarity, but what is unusual is that each of the four is an ‘island’ in the now landlocked area known as Traeth Mawr, near to Aled’s home in Porthmadog, and since both hills were discovered they have been surveyed using a Trimble GeoXH 6000 and their respective results are given above.


For more detail of the Trimble survey that promoted the two ‘islands’ known as Ynys Hir click {here


A post by Aled on the land known as Traeth Mawr and its many small 'islands' is due for publication in the ‘Guest Contributor’ page on the Mapping Mountains blog in March.

 
Aled Williams at the summit of Ynys Hir (SH 566 396)






Mapping Mountains - Hill Reclassifications - The Fours

There has been a ‘new’ Double Sub-Four recently discovered by Ed Gradwell and brought to attention by his brother; George.  The hill is West Nab (SK 266 939) which is situated in the Peak District.

Double Subs are sought after rarities for list compilers as they fail to qualify for main lists on two counts; height and prominence.  In this instance the main list is The Fours which is published by Europeaklist and also available in list format from the Haroldstreet website.


The full details for the hill are:

Cardinal Hill:  Bleaklow Head

Summit Height:  395m

Name:  West Nab

OS 1:50,000 map:  110

Summit Grid Reference:  SK 266 939

Drop:  c 23m



Ed Gradwell (L) and George Gradwell (R) at the featureless highest point of West Nab (SK 266 939).  Photo: David Gradwell



























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