Friday, 28 October 2016

Mapping Mountains – Significant Name Changes – Y Pedwarau

Fawnog Gnapiog (SN 930 761)

There has been a Significant Name Change to a hill that is listed in the Y Pedwarauwith the hill's height and drop being surveyed with the Trimble GeoXH 6000 on the 12th March 2016.

The criteria for the list that this name change applies to are:

Y Pedwarau These are the Welsh hills at and above 400m and below 500m in height that have 30m minimum drop.  The list is co-authored by Myrddyn Phillips and Aled Williams, with the introduction to the Mapping Mountains publication of this list appearing on the 30th January 2017.

The hill is a part of the Pegwn Mawr range, this group of hills is situated in the north-eastern part of Mid and West Wales, and the hill is positioned between the small community of Llangurig to the north north-west and the town of Rhaeadr Gwy (Rhayader) to the south south-east.

The Trimble GeoXH 6000 gathering data at the summit of Fawnog Gnapiog

The hill appeared in the 400m P30 list on Geoff Crowder’s website under the name of Bryn Titli, which is a name that appeared close to the summit of the hill on Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer maps of the day.  

Bryn Titli

During my early hill listing I paid little regard to name placement on a map, or the meaning of names and to what feature the name was appropriately applied to.  Therefore I prioritised names for listing purposes that I now understand are inappropriate, and Bryn Titli is such an example as this name has been consistently applied by the Ordnance Survey to land taking in a 492.7m (converted to OSGM15) high hill at SN 93383 75719 and whose summit is positioned 500 metres to the south-east, whilst a number of different scaled Ordnance Survey maps place the name Fawnog Gnapiog as applicable to land extending to the south south-west from this hill’s summit and importantly this land is a part of this hill.  

Extract from the Ordnance Survey series of Six-Inch maps

Extract from the Ordnance Survey historical 1:25,000 map

Extract from the current Ordnance Survey 1:25,000 Explorer map

Therefore, the name this hill is now listed by in the Y Pedwarau is Fawnog Gnapiog and this was derived from a number of different scaled Ordnance Survey maps that place this name applicable to land extending from the summit of this hill.

The full details for the hill are:

Group:  Pegwn Mawr

Name:  Fawnog Gnapiog

Previously Listed Name:  Bryn Titli
Summit Height:  495.7m (converted to OSGM15)

OS 1:50,000 map:  136, 147

Summit Grid Reference:  SN 93038 76169 

Drop:  59.0m (converted to OSGM15)

Myrddyn Phillips and Aled Williams (October 2016)

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