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Treak Cliff Cavern is a show cave near Castleton in Derbyshire, England. It is part of the Castleton Site of Special Scientific Interest [4] and one of only two sites where the ornamental mineral Blue John is still excavated (the other is the nearby Blue John Cavern). [5]
Speedwell Cavern is one of the four show caves in Castleton, Derbyshire, England. [1] The cave system consists of a horizontal lead miners' adit (a level passageway driven horizontally into the hillside) 200 metres (660 ft) below ground leading to the cavern itself, a limestone cave. The narrow adit is permanently flooded, so after descending a ...
Today, production is probably around half a ton per annum, [1]: 42 and the raw Blue John produced is kept within Castleton where small articles, mainly jewellery, are worked and sold. [ 1 ] : 95 A "lost" deposit was rediscovered in Treak Cliff Cavern in 2013, [ 8 ] [ 9 ] and in 2015 a new vein, the first for 150 years, was discovered close to ...
In the UK Blue John, or "Derbyshire Spar", is found only in Blue John Cavern and the nearby Treak Cliff Cavern.It is a type of banded fluorite.The most common explanation for the name is that it derives from the French bleu-jaune, meaning 'blue-yellow', but other derivations have been suggested.
Giant's Hole is a well-known cave near Castleton in Derbyshire, consisting mostly of large passages.It is a stream-way cave, and part of the Karst topography of the area. [1]
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Oxlow Cavern is a part-natural and part-mined cavern near Castleton in Derbyshire, England.It is situated on the south side of the road running from the A623 at Sparrowpit to the Winnats Pass, west of Castleton, and is almost opposite Giant's Hole on the other side of the road.