Ynys Cynfelyn (SN 649 919)
There has been a Significant Name Change to a hill that is listed in the 30-99m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill confirmed by LIDAR analysis conducted by Myrddyn Phillips.
LIDAR image of Ynys Cynfelyn (SN 649 919) |
30-99m Twmpau - Welsh hills at or above 30m and below 100m in height with 30m minimum
drop, with an accompanying sub list entitled the 30m Sub-Twmpau with the
criteria for this sub category being all Welsh hills at or above 30m and below 100m
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 30-99m Twmpau by Myrddyn Phillips |
Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips |
When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the transposed name of Plas y Gwynfryn, with an accompanying note stating; Name from buildings to the West.
Plas y Gwynfryn | 40c | SN649919 | 135 | 23 | Name from buildings to the West |
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 transpose the name of a house and use it for that of the hill. This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Annals and Antiquities of the Counties and County Families of Wales by Thomas Nicholas |
The full details for the hill are:
Group: Pumlumon
Name: Ynys Cynfelyn
Previously Listed Name: Plas y Gwynfryn
OS 1:50,000 map: 135
Summit Height: 45.1m (LIDAR)
Summit Grid Reference: SN 64923 91967 (LIDAR)
Bwlch Height: 5.5m (LIDAR)
Bwlch Grid Reference: SN 65441 92012 (LIDAR)
Drop: 39.65m (LIDAR)
Dominance: 87.88% (LIDAR)
Myrddyn Phillips (July
2021)
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