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Moel Oernant

Hill (503m) in Gwynedd

Field	Value
name	Moel Oernant
photo	File:Farmland and Moel Oernant - geograph.org.uk - 157781.jpg
photo_caption	Farmland and Moel Oernant
elevation_m	503
elevation_ref
prominence_m	141
prominence_ref
translation	bare hill of the cold stream
language	Welsh
location	Gwynedd, Wales
map	Wales
map_caption	Location in NW Wales
coordinates
grid_ref_UK	SH 742340
topo	OS Landranger 124 / Explorer OL18
fetchwikidata	ALL

Moel Oernant is a 503 m high hill in the community of Trawsfynydd in the county of Gwynedd in North Wales. It has a number of western tops, the highest of which reaches a height of 466 m overlooking the waterbody known as Llyn Gelli-Gain and another at Frîdd Wen exceeds 410 m. To the south of the lake is the top of Pîg Idris which reaches 429m. The minor top of Y-Foel attains 430m to the northeast of Moel Oernant.

Geology

The hill is formed largely from the mudstones, siltstone and sandstones of the Maentwrog Formation and the siltstones of the underlying Clogau Formation, component units of the Mawddach Group of Cambrian age sedimentary rocks. Sandstones and siltstones of the Gamlan Formation of the Harlech Group are also present. An igneous intrusion of microtonalite lies to the west of the summit and the whole hill is cross-cut by dykes of similar material and later dolerite. Some quartz vein mineralization is recorded within the microtonalite outcrop. A number of faults criss-cross the area, the most significant of which is the broadly north–south aligned Craiglaseithin Fault which runs through the summit of the 466m top. The lower slopes are mantled with a patchy cover of glacial till.

Access

A public bridleway continuing as a public footpath runs from Cwm Prysor southwest across the northern and western flanks of the hill towards Trawsfynydd. Other than parts of its northern slopes the entire hill is mapped as open country under the Countryside and Rights of Way Act 2000 and therefore freely available for public access on foot. Along its southern and eastern margin is a minor public road beside the Afon Gain.

References

Moel Oernant. 52.88943. -3.86968. 2023-06-13
"Moel Oernant". hill-bagger.co.uk.
British Geological Survey 1:50,000 map sheet 135/149 '''Harlech''' & accompanying memoir
Ordnance Survey Explorer map OL18 '''Harlech, Porthmadog & Bala/Y Bala'''

Info: Wikipedia Source

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trawsfynydd mountains-and-hills-of-gwynedd mountains-and-hills-of-snowdonia

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