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Mossdale Caverns
Mossdale Caverns is a cave system in the Yorkshire Dales, England. It is located about north of Grassington, and east of Conistone, where Mossdale Beck sinks at the base of Mossdale Scar. It lies at an altitude of on the eastern flank of Wharfedale, and extends south-east beneath Grassington Moor.
The cave system is formed within the Middle Limestone of the Yoredale Series. The large stream (average flow 100 litres/second) has been shown by dye testing to resurge at Black Keld, some to the WNW lower.
==Speleology==
Exploration of Mossdale Caverns was begun in 1941 by Bob Leakey of the British Speleological Association. It is a very flood-prone challenging cave system, with many of its passages involving long wet crawls. Other sections have neck-deep water and many of Leakey's explorations were conducted solo as few of his contemporaries had the necessary endurance. The end was finally reached again in 1964 by Mike Boone and Pete Livesey. A return trip to the far end takes between eight and ten hours.
Permission to enter the caves is no longer granted because of the tragedy that occurred in 1967. Exploration does still take place, but on an unofficial basis. It is thought that the cave system may hold the key to breaking into the Great Scar Limestone and the extensive cave that exists behind Black Keld.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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