Uamh an Claonaite (Scottish Gaelic: Cave of the sloping rock) is the longest cave in Scotland.^[2] It consists of a series of dry passages and a series of at least six sumps which have been dived over the years.^[3]

The attempt by members of the Grampian Speleological Group to excavate a nearby sinkhole, Rana Hole, and connect into the final chambers from above^[4] achieved its aim in December 2007.^[5]

The length of the cave is 2.868 kilometres (1.782 mi) and the vertical range is 110 metres (360 ft).^[1]