, Northern Outcrop - East (Morlais to Abergavenny)
map using leaflet map:
The cave lies in the floor of Black Rock Quarry and is in the process of being quarried away. Permission to visit the site should be sought from the quarry Manager (1980). A stream runs across the quarry floor from Ogof Rhaeadr Ddu and sinks in the cave.
The small entrance leads into an active stream passage. Upstream, the cave becomes too tight after the waterfall. Downstream leads to another waterfall and two chambers. The water emerges in Pylon cave.
SSSI: 0080 Mynydd Llangatwg (Mixed)
BNSSS (1961); Cwmbran CC, 1982;
CSS Records (19), 1992; Smith & Stevens, 2013
Theo Schuurmans, Keith Jones, Steve Ainley, CwmbranCC Journal 11, pp16-19 (1982)
Caves of South Wales, Stratford, T. , 1995
A Caver's View of the Clydach River (Cwmbran Caving Club, 1986), Schuurmans, T.