Carmarthenshire
, Northern Outcrop - West (Black Mountain)
map using leaflet map:
Sink
Pothole
Access
About 2 miles South East of Herberts Quarry, a shaft dug and blasted to a depth of 10 metres.
Description
Dig near tramway with rusty steel cover. Extremely tight and work continues in the boulder choke at the foot of the shaft. The entrance lies below the Honeycomb Sandstone .