Malham Cove is a huge natural limestone cliff just north of village of Malham which formed as a glacial retreat feature of the Craven Fault and was once the scene of a spectacular prehistoric waterfall*.
The limestone valley above the cove is now dry, with the river having found an alternative route through an undiscovered cave system deep underground. However, at the foot of the cliff, a small stream called Malham Beck issues from Malham Cove Rising, the entrance to a submerged cave system which is still being explored by cave divers.
[* = Over the weekend of 5th - 6th December 2015 there was an incredible sight at the cove as - in an event unprecedented in recent history - a flood surge let to the waterfall flowing again (albeit just for a few hours). Please see the separate news item for more information..]