Lancaster-Ease Gill Cave System
The Caves under and around Ease Gill on the Cumbria/Lancashire of border of the UK form part of the longest and most complex system in Britain, the Three Counties System. See link to UK longest and deepest list. The system extends beneath Casterton, Leck and Ireby Fells around the western and southern flanks of Gregareth Hill, with around 75Km of passages. The caves are formed in the Carboniferous (Dinantian) Great Scar Limestone.They contain a wide range of passage types, sediments and speleothems. See page on Science