Pitch drops into active streamway to Shakespeare's Cave Midsummer Nights Dream inlet Blue Sump

L:1705
V:80

Llanelly Quarry Pot, Llanelly Quarry Pothole


NGR: SO 22468 12408
270 m.asl

Monmouthshire , Northern Outcrop - East (Morlais to Abergavenny)
 map using leaflet map:
Active Pothole
Access The cave lies in the far right hand corner of the quarry. The entrance has often been buried by rock falls; a pipe was installed by Brynmawr CC in 2025 to safeguard access.
Description A sizeable cave with a long streamway which reappears in Shakespeare's Cave further down the gorge. The rift near the entrance is narrow and there is danger from loose rocks near the entrance.
History M.Davies, BNSSS/BEC, 1963; Llanelly Diggers discovered streamway after digging from 1986-1988
Hydrology Pitch drops into active streamway to Shakespeare's Cave
Conservation SSSI: 0381 Cwm Clydach (Mixed)
Gallery

Brendan Marris
2010
Huw Jones/BCC
2025
New piped entrance work
Survey
Belfry Bulletin 1, (190), 2-5, 1963
HCC (1987)
Descent 85, 1988
CSS nl 59(10), p.85, Totem Aven
References
Belfry Bulletin 190, pp.2-5, 1963. A new cave near Brecon [refers to a quarry worker saying that large chamber had been found above entrance]
AxCG nl. Sep 1964 p.92, C.Graham, Combined Ops. in Llanelly Pot
SWCC Newsletter 52, Mel Davies Recent Cave Discoveries in S Wales, in 3. Llanelly Quarry Pothole, 1966
Cwmbran CC Journal, 1 (4), Mar. 1969, Russell Pope, Dig in Llanelly Quarry Pot
A Caver's View of the Clydach River (Cwmbran Caving Club, 1986), Schuurmans, T.
Soft Rocks and Hard Mud, Descent 85, pp.20-23 (1988), Phil Checketts, Ashley Dickenson, Mike Green
CDG nl.91 (1989)
CSS nl 59(10), pp.84-85, Mike Green, Return to Totem Aven
Brendan Marris Caves of South Wales
Llanelly Quarry Pot entrance. Descent 306,18 (2025) Huw Jones.
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Cambrian Cave Registry entry 849
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