Treak Cliff Cavern

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Captivating Treak Cliff has a forest of stalactites and exposed seams of colourful Blue John stone, which is still mined to supply the jewellery trade. Tours lasting 40 minutes depart every half-hour and focus on the history of mining; kids can polish their own Blue John stone during school holidays. It's just under a mile west of Castleton's village centre.

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