L:1500
V:

Ogof Cynnes, Ogof Gynnes


NGR: SO 14088 15408
524 m.asl

Powys , Northern Outcrop - East (Morlais to Abergavenny)
map using leaflet map:
Cave
Access There is a small entrance on the East side of a long oval doline. The entrance is very difficult to find, being on open moorland. Best approached from Blaen Onneu Quarry. Head roughly West towards the Trig. Point and then from there turn slightly South of West for about 800 metres to the head of a large dry valley. There is a small rock outcrop and cairn on this side of the valley with two oblong shaped shakeholes nearby. The larger of the shakeholes contains the entrance.
Description An interesting and sporty cave which is dry but exceedingly muddy. Parts of the cave are very arduous. A series of rifts, squeezes and pots lead to a main chamber 10m high with passages leading off.
History HCC 1967; M.Farr, March 1968; Easter series, Ben Lovett et al., MCC, 1993
Hydrology
Conservation
SSSI: 3159 Mynydd Llangynidr(Geological) GCR: 1056
Survey
M.Farr & I.Homes, 1968
Descent 112
References
SWCC Newsletter no. 66, Farr,M., pages 28-31 (1970) Cave Potential on Llangynidr Mountain
BCRA Trans 1(3) p.150, Trevor M.Thomas, The South Wales Interstratal Karst (1974) [as Ogof Gynnes]
Descent 112
Caves of South Wales, Stratford, T. , 1995
A Caver's View of the Clydach River (Cwmbran Caving Club, 1986), Schuurmans, T.
Brendan Marris Caves of South Wales
Cambrian Cave Registry entry 784
© Cambrian Caving Council ⓗ 2017