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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 ...
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 ]
The miners who work the remaining seams are also the guides for underground public tours. The eight working seams are known as Twelve Vein, Old Dining Room, Bull Beef, New Dining Room, Five Vein, Organ Room, New Cavern and Landscape. In 1865, Blue John Cavern was the site of the first use of magnesium to light a photograph underground. It was ...
The cavern was declared to be one of the Seven Wonders of the Peak by philosopher Thomas Hobbes in his 1636 book De Mirabilibus Pecci: Being The Wonders of the Peak in Darby-shire, Commonly called The Devil's Arse of Peak. [9] Daniel Defoe uses the same name in his A tour thro' the whole island of Great Britain (1724–26):
Bowl made from Derbyshire Blue John, on display in Castleton Visitor Centre French candelabra crafted of Blue John, c. 1860. Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a rare form of fluorite with bands of a purple-blue or yellowish colour.
This is a partial list of caves in Derbyshire, England, arranged alphabetically. [1] [2] Many lie within the Peak District National Park.[3] [4]Giant's Hole Great Masson Cavern Poole's Cavern Speedwell Cavern Cave entrance at Harboro' Rocks
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Titan is a natural cavern near Castleton in the Derbyshire Peak District, and is the deepest shaft of any known cave in Britain, at 141.5 metres (464 ft). [1] The existence of Titan was revealed in November 2006, [2] following its discovery on 1 January 1999 after cavers discovered connections from the James Hall Over Engine Mine to both Speedwell Cavern and Peak Cavern.