List of Caves in The United Kingdom - Overview

Overview

• The deepest cave in Wales the UK is Ogof Ffynnon Ddu, 308 metres (1,010 ft) deep and containing around 50 km (31 mi) of passageways.
• The deepest cave in England is Peak Cavern in Speedwell Cavern, Derbyshire, 248 metres (814 ft) deep.
• The deepest cave in Scotland is Cnoc nan Uamh ('hill of the caves') in Assynt, 83 metres (272 ft) deep.
• The deepest cave in Northern Ireland is Reyfad Pot in County Fermanagh, 193 metres (633 ft) deep.

The longest cave system in the UK is the Easegill System in the Yorkshire Dales, with at least 72 km (45 mi) of passageways.