Tag: Castleton

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Castleton has long been known for its Carboniferous Limestone, its caves and for the Blue John semi-precious stone mined here. Much of the area is owned by the National trust and is designated an site of special scientific interest (SSSI). This means that fossils can only be looked at and photographed, but must not be collected. Carboniferous, Outcrops, Rating: ♦♦♦