Large zinc-lead mine worked from shafts, now abandoned (closed 1982) and flooded.
Probably famous for its ''Great Vug'', a large 3x2x1m cavity with superb crystalline specimens of Galena, Sphalerite, Pyrite, Quartz and scores of rare sulphosalts. 100's of specimens were recovered by Richard Barstow and they still appear in mineral shows in Britain.
Ref. Moreton, S. (1999) Mineralogical Record, 30, 99-106.
Currently, the actual minesite is operating as a business so trespassing is strongly unadvised especially considering all the specimens are long gone (including drill cores).