Three man-made caverns formed as part of a slate quarry in the Loveny Valley, near the village of St Neot.
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St. Neot Mining Syndicate - 22m
Tin Hatches - 270m
Hole Wood - 449m
Jerk, Wheal - 452m
Tin Valley - 594m
Caroline, Wheal - 680m
Ambrose Lake Mine - 812m
Leather, Wheal - 894m
Sisters, Wheal - 1,047m
Roaring Shaft - 1,298m
Friendship, Wheal - 1,305m
Whim Shaft - 1,321m
Robins, Wheal - 1,711m
Tremadoc - 1,711m
Corton, Wheal - 1,787m
West Robins West, Wheal - 1,793m
Tregeagle Dressing Floor - 1,828m
Tregeagle - 1,830m
Bank, Wheal - 1,872m
Trevenna, Wheal - 1,887m
Grylls Consolidated, Wheal - 1,914m