Pwll Dwfn , Deep Pot
map using leaflet map:
Cave
Access Small entrance in dry valley near track.
Follow the old tramway up from Carreg Haffes farm towards the stone walling and as the path crosses the top of the Dan-yr-Ogof dry valley, look for the entrance a few yards from the track on the right.
Description This is a vertical pothole 90 metres deep in 5 pitches down to a sump above which a high aven has been climbed and alternate routes found.
History
Wessex Caving Club & SWCC, 1946; CDG, 2007,2011-2020
Hydrology Traced to Washing Machine in DYO
Conservation
SSSI: 0854 Mynydd Du (Mixed)
Biological
Gallery
Brendan Marris
CC BY-SA 3.0
Mark Burkey
Survey Dolphin & Low, 1947 (also BCRA Trans 4(1/2), 1977);CPC, 1962 CDG nl 183, sump. References Belfry Bulletin, 195, 5-8. Description and survey SWCC Newsletter, 20 August 1947 Wessex Cave Club Circular No.6 (NS), 1947 P.Dolphin, C.Low, J.Lander, N.Paddock Wessex Cave Club Circular No.8 (NS), 1947 British Caver, 17, 1947, p.35,75, Dolphin,P. & Low, C., Pwll Dwfn, Glyntawe, a South Wales Pot Cullingford, C.H.D. (1951) Exploring Caves,pp.73 Britain Underground, 1953 Jnl CravenPC 3(2), pp.63-65, 1962, D.M.Judson. Pwll Dwfn British Caver, 41, 1965, p.19 Caves in Wales and the Marches (Dalesman), Jenkins, D.W. & Williams, A.M. 1st Ed.1963, p.44 CDG nl.24, p.24 (1972) Caves of South Wales, 1995, p.109 Selected Caves of Britain and Ireland, 1997 Welsh Sump Index 2006 Descent 214, p.10, Martyn Farr, New route in Pwll Dwfn CDG nl 183, pp.20-22 (2012) Brendan Marris Caves of South Wales SWCC 75th Anniversary Publication, Vol.2, pp.205-209, Tony Baker, Gareth Davies, Pwll Dwfn Extensions (2021)
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Cambrian Cave Registry entry 275
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