Fan y Big
|Fan y Big|
|Elevation||719 m (2,359 ft)|
|Prominence||30 m (98 ft)|
|Parent peak||Waun Rydd|
|Translation||peak/beacon of the bill/beak (Welsh)|
|Parent range||Brecon Beacons|
|Topo map||OS Landranger 160|
Fan y Big (or Fan y Bîg on Ordnance Survey maps), //, is a subsidiary summit of Waun Rydd in the Brecon Beacons National Park, in southern Powys, Wales. At 2359 feet or 719m, Fan y Big lies at the western tip of the Gwaun Cerrig Llwydion plateau. Its name translates as 'peak of the bill' - perhaps in allusion to its striking pointed shape, as seen from some directions. The summit is bare but marked by a cairn, which stands on the edge of its precipitous western face. The view of this face from Cribyn is regarded as utterly striking.
The peak is prominent on the north facing escarpment of the central part of the Brecon Beacons and several footpaths cross the summit. All the surrounding land is open access and so open to all. In poor weather however, the paths are the safest route for access. The peak is often crossed by hlkers aiming for Cribyn (mountain), Pen y Fan and Corn Du, and also forms part of the Fan dance.
In common with other peaks of the Brecon Beacons, the upper slopes of Fan Big are formed from sandstones of the Brownstones Formation of the Old Red Sandstone laid down during the Devonian period. The lower slopes of the hill are formed from sandstones and mudstones of the underlying Senni Beds Formation. The rock strata tilt gently southwards.The valleys to the northwest and east nurtured small glaciers during the last ice age. This glacial erosion resulted in the very steep northern face which the mountain possesses.
- Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. ISBN 1-85284-304-7.
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