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Pwll Y Wydden Sink


NGR: SN 83013 15763
410 m.asl

Powys , Northern Outcrop - West (Black Mountain)
 map using leaflet map:
Sink Doline
Access Sink in huge shakehole with old dig at bottom
Description A large deep collapsed doline which takes water directly over part of the Dan-yr-Ogof system.
History A large part of the backwall collapsed in 2025
Hydrology Tests
Conservation SSSI: 0854 Mynydd Du (Mixed)
Gallery

Brendan Marris
2008
Alan Richards
2025
Recent blockfall
Survey
References
SWCC Newsletter 97, 1983, pp.8-11, Bill Gascoine, A Hydrological Study of the Dan Yr Ogof and Ffrwd Las Resurgences
Gascoine, W., (1989), Hydrology of the limestone outcrop, p.52 in Limestones & Caves of Wales
Search for further records Browse registry map
Cambrian Cave Registry entry 262
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