Mapping Mountains – Significant Name Changes – 200m Twmpau

Pastures (SJ 080 032)

There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips.

Pastures (SJ 080 032)

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

200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

The 200m Twmpau by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is encircled by minor roads, with the A458 road further to the north, the B4389 road further to the east and the A470 road further to the south-west, and has the small town of Llanfair Caereinion towards the north-east.

When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the accompanying Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

When the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed with 28m of drop, based on the 289m summit spot height and the 261m bwlch spot height that appear on the Ordnance Survey 1:25,000 Explorer map, and it was subsequently listed under the point (Pt. 289m) notation.

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

Before visiting this hill I called at Llawnt Isaf (SJ 077 033), the farm directly below the hill to its west.  As there was no answer I continued toward the hill and soon met the local farmer; Ruth Davies, who was heading back to her farm in a vehicle.  I flagged her down and we talked for ten minutes or so.  Ruth told me that the farm had been in her family since her parents moved here, with both being local with her father from Aberhafesp and her mother from Manafon.  Ruth is now aged 74 and when I enquired about the upper field where the summit of this hill is situated she told me that the two upper fields are known as the Pastures and that this name was passed down to her from her father.  She also confirmed that this hill has no individual name.    

Ruth Davies of Llawnt Isaf

Therefore, the name this hill is now listed by in the 200m Twmpau is Pastures, and this was derived from local enquiry.

The full details for the hill are:

Group:  Carnedd Wen

Name:  Pastures

Previously Listed Name:  Pt. 289m 

  

OS 1:50,000 map:  136

Summit Height:  288.5m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 08047 03297 (Trimble GeoXH 6000)

Bwlch Height:  260.5m (LIDAR)

Bwlch Grid Reference:  SJ 07733 03319 (LIDAR)

Drop:  27.9m (Trimble GeoXH 6000 summit and LIDAR bwlch)

For details on the Trimble GeoXH 6000 survey of this hill

Myrddyn Phillips (December 2020)