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.
GOG (partial)
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