Cambrian Cave Registry

L:180 V:	Ogof o Flaen-y-Waun, Ogof o'Flaen-y-Waun NGR: SN 89510 16051 424 m.asl Powys , Northern Outcrop - Central (Penwyllt to Penderyn)			map using leaflet map:
		Cave
Access	Situated on Pant Mawr to the West of the Nedd Fechan valley. The entrance is a small sinkhole situated a few hundred metres East of Pant Mawr Pot and is difficult to find.
Description	A drop down through a hole leads to a crawl and after a short distance, the stream disappears into a low bedding. A muddy crawl to the right bypasses the bedding and eventually drops back into the stream at the other end. The passage slowly becomes wider and a short side passage can be entered through boulders on the right. The main passage continues and is large enough to stand in but gradually becomes lower and wider until the stream sinks in a low bedding blocked by stones.
History	SWCC 1970. Extended by WSG
Hydrology				Tests
Conservation	SSSI: 0930
Gallery
^{Brendan Marris} 2010
Survey
WSG (1994)
Descent 117, 1994
References
WSG,Bull 9(7), 1994, pp.35-37 Tim Barter, Ogof o'Flaen-y-Waun
Caves of South Wales, Stratford, T., 1995
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Cambrian Cave Registry entry 401			© Caving Wales ⓗ Ogofa Cymru