| 词条 | Crug Mawr |
| 释义 |
| name = Crug Mawr | photo = Looking NNE from the Sugar Loaf - geograph.org.uk - 355915.jpg | photo_caption = Crug Mawr viewed from the Sugar Loaf | elevation_m = 550 | prominence_m = | parent_peak = | listing = | location = Powys, Wales | range = Black Mountains | coordinates = {{coord|51.8977|-3.0736|type:mountain_region:GB|display=inline,title}} | grid_ref_UK = SO262226 | topo = }} Crug Mawr is a hill in the Black Mountains in the Brecon Beacons National Park in southern Powys, Wales. Its summit at a height of 550m (1,805 ft) is marked by a trig point. The peak sits high above the valleys of the Grwyne Fawr and Grwyne Fechan to the north of the more well-known Sugar Loaf. The views from here across the Black Mountains are wide ranging and also extend eastwards across Monmouthshire. Four ridges run off to the northwest, east, southeast and southwest, the last ending in the subsidiary summit of Blaen-yr-henbant. AccessAll of the upper slopes of the hill are designated as open country. A bridleway runs up from the minor road east of Llanbedr and then on northwards to Mynydd Du Forest. The Beacons Way runs across the slopes of the hill between Partrishow and Llanbedr. GeologyIn common with other hills in the Black Mountains, Crug Mawr is formed from mudstones and sandstones of the Old Red Sandstone laid down during the Devonian period but there is little rock exposed at the surface other than in the beds of the streams which occupy valleys such as Cwm Milaid and Cwm Beusych.[1] References1. ^British Geological Survey 1:50,000 map sheet 214 'Talgarth' & accompanying sheet explanation 2 : Mountains and hills of Powys|Black Mountains, Wales |
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