Esgair y Llyn (SN 841
701) - Pellennig addition
There has been an addition to the
list of Y Pellennig – The Remotest Hills of Wales instigated from map study and confirmed by LIDAR analysis conducted by Aled Williams and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips and Aled Williams.
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| Esgair y Llyn (SN 841 701) |
The hill is situated in the Elenydd group of hills which are positioned in the central part of the Region of Mid and West Wales. This grouping of hills forms one of the wildest in Wales and takes in some of the most remote hills in the country. The hill is situated in an immense grassland of moor and tussocks with Llyn Cerrigllwydion Isaf to its south-east and the higher summits of Cnapyn Drawsffos (SN 834 706) to its north-west and Blaen Rhestr (SN 843 693) towards its south. Any towns or villages are a far distance away with Ysbyty Ystwyth towards the west and Rhaeadr Gwy (Rhayader) towards the east.
The hill can be accessed from its north-east via a
track that leads to the farmhouse of Glanhirin, a path then leads toward and up
the north-eastern ridge of Blaen Rhestr.
However, an alternate route is from the east north-east via the Monks Trod,
which is an ancient route across the hills developed by the Cistercian monks as
a bi-way between the abbeys of Cwm-Hir and Strata Florida. Whichever way is chosen it leads into land
that is open and featureless, and when visiting the hill a day comprising good
weather is highly recommended.
The name of the hill is Esgair y Llyn and its
inclusion as a Pellennig was spotted by Aled as the Ordnance Survey enlarged
mapping on the Geograph website gives this hill a 529m summit spot height and a
513m bwlch spot height, these values give the hill 16m of drop which is
sufficient to enter the list of Pellennig hills with the caveat of the distance
from the hill’s summit to the nearest paved public road being a minimum of
2.5km. As Aled was analysing other hills
in the vicinity against LIDAR data, he did likewise with Esgair y Llyn. LIDAR (Light Detection & Ranging) is highly
accurate height data that is now freely available for much of England and
Wales.
Aled’s analysis of LIDAR
data gave the hill a 528.8m summit height at SN 84118 70177, and a 513.3m bwlch
height at SN 83811 70087, these values give this hill 15.5m of drop which is
sufficient when coupled with its summit being 4.535km from
the nearest paved public road for qualification as a Pellennig hill.
The subsequent Trimble GeoXH 6000 survey produced a summit height of 528.6m and a bwlch height of 513.0m, with these values giving this hill 15.6m of drop, which along with its remoteness is sufficient for this hill to be classified as a Pellennig.
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| The Trimble GeoXH 6000 gathering data at the summit of Esgair y Llyn |
This now brings the overall total for Y Pellennig to 169 hills for the Complete list (All Wales), with the total for the Mainland Wales list being 125 hills. The Master List will be duly updated on the Mapping Mountains site.
The full details for the hill are:
Cardinal Hill: Carny yr
Hyrddod
Summit Height: 528.6m
(converted to OSGM15)
Name: Esgair y Llyn
OS 1:50,000 map: 135,
136, 147
Summit Grid Reference:
SN 84116 70174
Drop: 15.6m
Distance: 4.535km
The list of additions and deletions in the Pellennig list
since the 1st edition of Y Pellennig – The Remotest Hills of Wales was published
by Europeaklist (1st edition, April 2015) is as follows:
ADDITIONS
Esgair y Llyn (LIDAR data) (SN 841 701)
DELETIONS
Myrddyn Phillips and Aled Williams (December 2016)
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