Pen y Bryn (SH 978 407)
There has been a Significant Name Change to a hill that is listed in the Y Trichant – The 300m Hills of Wales, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips.
Pen y Bryn (SH 978 407) |
Y Trichant – The 300m Hills of Wales. Welsh hills at or above 300m and below 400m in height that have 30m minimum drop, with an accompanying sub list entitled the Sub-Trichant with the criteria for this sub category being all Welsh hills at or above 300m and below 400m in height with 20m or more and below 30m of drop. The list is authored by Myrddyn Phillips, with the Introduction to the list and the renaming of it appearing on Mapping Mountains on the 13th May 2017.
Y Trichant - The 300m Hills of Wales by Myrddyn Phillips |
When the original 300m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category.
After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. 352m) notation with an estimated c 20m of drop, based on the 352m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 332m bwlch height, based on interpolation of 10m contouring between 330m – 340m.
Extract from the Ordnance Survey 1:25,000 Explorer map |
Extract from the Tithe map |
Extract from the apportionments |
The full details for the hill are:
Group: Arenig
Name: Pen y Bryn
Previously Listed Name: Pt. 352m
OS 1:50,000 map: 125
Summit Height: 353.1m (LIDAR)
Summit Grid Reference: SH 97898 40730 (LIDAR)
Bwlch Height: 330.3m (LIDAR)
Bwlch Grid Reference: SH 97766 40488 (LIDAR)
Drop: 22.75m (LIDAR)
Myrddyn Phillips
(November 2021)
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