Myarth is a hill in the
Usk Valley in the county of
Powys in South
Wales, about 2 miles west of
Crickhowell. Its summit at is covered by trees, whilst the larger part of its slopes are also wooded. It is listed as a
Marilyn. Myarth has an elongate form commonly ascribed to erosion by the west-to-east movement of the Usk Valley glacier during successive
ice ages. The
River Usk
The River Usk (; cy, Afon Wysg) rises on the northern slopes of the Black Mountain (''y Mynydd Du''), Wales, in the westernmost part of the Brecon Beacons National Park. Initially forming the boundary between Carmarthenshire and Powys, it fl ...
runs along the foot of the hill on its southern side. Myarth forms a prominent feature in many views over the Usk Valley and often features in commercial photography of the area.
Though it is ringed by public roads—the
A40 to the north and a minor road to the south—there is no public access to the hill itself, which is in private ownership.
[Ordnance Survey 1:25,000 scale Explorer map sheet OL 13 ''Brecon Beacons National Park: eastern area'']
In 2016, the hill was used as the location for a segment of an episode of the motoring series ''
The Grand Tour''.
References
{{coord, 51.880, -3.206, type:mountain_region:GB, display=title
Black Mountains, Wales
Mountains and hills of Powys
Marilyns of Wales