Mossdale Caverns

Mossdale Caverns
Mossdale Scar
LocationYorkshire Dales
Coordinates54°07′25″N 1°58′36″W / 54.12361°N 1.97667°W / 54.12361; -1.97667
Depth76 m (249 ft)
Length10.5 km (6.5 mi)
Discovery1941
GeologyCarboniferous limestone
Entrances1
DifficultyGrade 5
HazardsFlooding
Accessnot granted
Cave surveyOnline ULSA survey

Mossdale Caverns is a cave system in the Yorkshire Dales, England. It is about 5 kilometres (3.1 mi) north of Grassington, and east of Conistone, where Mossdale Beck sinks at the base of Mossdale Scar. It lies at an altitude of 425 metres (1,394 ft) 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 4.4 kilometres (2.7 mi) to the WNW 225 metres (738 ft) lower.