Powys
, Northern Outcrop - Central (Penwyllt to Penderyn)
map using leaflet map:
Sink
Cave
Access
On the road from Pont Nedd-Fechan to Ystradfellte turn off on Gwaen Bryn-Bwch to the fenced road and go for 1.5 miles to Pont Cwm Pwll-y-rhyd, Cross the bridge and go downstream to a deep trench on the right against the cliffs.
Permission should be sought from Blaen Nedd Isaf farm.
Description
A large open pit which takes the Afon Nedd Fechan in spate and connects under water with White Lady Cave.
History
Extensions found by diving from White Lady; dry entrance, with (often blocked) link to main entrance
Hydrology
Ordinarily, the water sinking is that portion of the Nedd Fechan which does not sink at the flood entrance of Ogof Nedd Fechan or at Bridge Cave sinks.
Ordinarily, the water sinking is that portion of the Nedd Fechan which does not sink at the flood entrance of Ogof Nedd Fechan or at Bridge Cave sinks.
Survey
SWCC Newsletter 33, 9-14, 1960 Grade 2
Unit 2 CRE & Pelobates 51
References
Trans.Cardiff.Nats.Soc. 21, (1890) p.128, Ronnfeldt, W., Cavern on the River Neath
Trans.Cardiff.Nats.Soc. 61, (1928) pp.12-54, North, F.J., River Scenery at the Head of the Vale of Neath
North, F.J., (1962), River Scenery at the Head of the Vale of Neath (ed.4)
Cave Diving Group Newsletter 5, 1-13, 1946
British Caver 17, 57-60, 1947
HCC Newsletter 2, 11-13, 1951
Cullingford,C.H.D. (1951), Exploring Caves, p.71
Britain Underground, 1953
HCC Newsletter 6, 9-10, 1953
SWCC Newsletter 10, 1954 (note on flooding)
SWCC Newsletter 33, 9-14, 1960 (digging through exit to exit)
CDG Review 1960-61 (Diving)
Caves in Wales and the Marches (Dalesman), Jenkins, D.W. & Williams, A.M., 1st Ed.1963
Proc.UBSS 12(3) p.322, Second Report on the Little Neath River Cave [Site 6 in or by the river bed]
Unit Two Cave Research & Exploration NL 1 (1987), Pwll Y Rhyd Extensions
Descent 77, pp.20-21, 1987, Peter Burgess, Pwll Y Rhyd extensions add nearly 1/4 mile
Pelobates 51 (1987), Pwll Y Rhyd Extensions
Caves of South Wales, Stratford, T., 1995
WSG Bulletin 9(8) 1997 Duncan Minty, Hydrological Investigations in the central Brecon Beacons
