Esgair Neint (SN 785 801) – Welsh
Highland Sub addition
There has been an addition to the listing of the Welsh Highlands – Uchafion Cymru, with the summit height, bwlch height
and their locations, the drop and status of the hill derived from LIDAR
analysis conducted by Aled Williams.
|
LIDAR image of Esgair Neint (SN 785 801) |
The criteria for the list that this addition applies to are:
|
Welsh Highlands - Uchafion Cymru by Aled Williams and Myrddyn Phillips |
The name the hill is listed by is Esgair Neint and
it is adjoined to the Y Garn group of hills, which are situated in the northern part of South Wales (Region B,
Sub-Region B1), and it is positioned with the
A44 road to its north-west, and the B4343 road and the A4120 road to its west,
and has the village of Ponterwyd towards the west north-west.
When the initial P10 sub list was completed in
June 2020 this hill was listed with an estimated c 10m of drop, based on a 532m
summit height and an estimated c 522m bwlch height, with the latter based on
interpolation of 5m contouring that appeared on online mapping.
|
Extract from the Ordnance Survey 1:25,000 Explorer map |
When the details for this hill were updated with
data from basic levelling surveys conducted by Myrddyn Phillips, the drop was
amended to 9.9m, based on a 32½ft/9.9m basic levelling survey conducted on the 24.09.04.
However, it was not until LIDAR became available
that the details for this hill could be accurately re-assessed. The LIDAR (Light Detection & Ranging)
technique produced highly accurate height data that is now freely available for
much of England and Wales.
Therefore, the addition of this hill to Welsh
Highland Sub status is due to LIDAR analysis, resulting in a 535.5m summit
height and a 525.5m bwlch height, with these values giving this hill 10.0m of
drop, which is sufficient for it to be classified as a Welsh Highland Sub.
The full details for the hill are:
Group: Y Garn
Name: Esgair Neint
OS 1:50,000 map: 135
Summit Height: 535.5m
(LIDAR)
Summit Grid Reference:
SN 78508 80178 (LIDAR)
Bwlch Height: 525.5m
(LIDAR)
Bwlch Grid Reference:
SN 78586 80342 (LIDAR)
Drop: 10.0m
(LIDAR)
For the additions, deletions and reclassifications to the Welsh Highlands – Uchafion Cymru
reported on Mapping Mountains please consult the following Change Registers:
Welsh Highland P15s
Welsh Highland Subs
Aled Williams and Myrddyn Phillips (December 2023)
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