Saturday, 30 July 2016

Mapping Mountains – Significant Name Changes – Y Pedwarau

Gwastad Mawr (SJ 210 349)

This is the nineteenth post under the heading of Significant Name Changes, and the following details are in respect of a hill whose summit and bwlch was surveyed with the Trimble GeoXH 6000 on the 29th April 2015 and 7th June 2015 respectively.

The hill is part of Y Berwyn, which is an extensive group of hills situated in the south-eastern part of north Wales.  The hill is positioned to the south of the town of Glyn Ceiriog, and eastward of the small communities of Craignant and Selattyn.

The Trimble GeoXH 6000 gathering data at the summit of Gwastad Mawr

The hill appeared in the 400m P30 list on Geoff Crowder’s website under the name Pen y Gwely North Top, with an accompanying note stating; Name from hill to the South.  This listing of hills is now co-authored with Aled Williams and known as Y Pedwarau, and the hill's status as a Pedwar was confirmed by the survey with the Trimble.

Pen y Gwely North Top
  Name from hill to the South

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them, or as in this instance, use the name of another hill as a directional name as no other name seemed suitable for the listed hill.  This is not a practice that I now advocate as with a little research either conducted locally or historically an appropriate name for the hill can usually be found.

The name this hill is now listed by in Y Pedwarau (Europeaklist and Haroldstreet 2013) is Gwastad Mawr, and this was derived from the Ordnance Survey One-Inch ‘Old Series’ map.

An extract from the Ordnance Survey One-Inch 'Old Series' map

The full details for the hill are:

Group:  Y Berwyn

Name:  Gwastad Mawr

Previously Listed Name:  Pen y Gwely North Top 

Summit Height:  448.9m (converted to OSGM15)

OS 1:50,000 map:  126

Summit Grid Reference:  SJ 21055 34971 
Drop:  35.2m

For details on the summit and bwlch survey of Gwastad Mawr

Myrddyn Phillips and Aled Williams (July 2016)

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