L:1015
V:90

Ogof Ap Robert


NGR: SO 09959 13479
517 m.asl

Powys , Northern Outcrop - East (Morlais to Abergavenny)
map using leaflet map:
Sink Cave
Access In open moorland, West of Trefil village.
Description A deep swallet with a 12m cliff. Two entrances in the base of the cliff unite in Cullingford's Chamber. There is a further crawl and a 5m drop leading to a boulder choke in a small chamber. Water from here resurges at the Sion-Sieffri Reservoir to the South of Trefil village. Extended in 1987 through a series of rifts and intersecting passages.
History C.D. Cullingford (1951). SVCC 1968. Extended by GOCAF and GSS in 1987.
Hydrology
Conservation
Survey
GOCAF
GOG (partial)
References
Cullingford, C.H.D. (1951) Exploring Caves,pp.64-65
SVCC Journal 3, 1970, pp.10-15, R.Lewis, Excavations 1968-1969
Descent 82, p.10 (1988), Onslaught planned for Ap Robert
Caves of South Wales, Stratford, T. , 1995
Brendan Marris Caves of South Wales
Cambrian Cave Registry entry 758
© Cambrian Caving Council ⓗ 2017