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 v-g.me 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
    497m
    SN930762
    136/147
  214
   

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)









No comments: