Dungeon Ghyll is a ravine on the north side of the valley, starting on the fell slopes between Harrison Stickle and Loft Crag/Pike o' Stickle. It is narrow, and a No Through Route for walkers. Much more open is Stickle Ghyll, which descends from Stickle Tarn. There is a well-trodden path from the Stickle Ghyll car park opposite the New Dungeon Ghyll hotel up to the tarn, parts of which have been improved with stone slabs to reduce erosion. Another waterfall, known as Dungeon Ghyll Force, is up a path behind the Old Dungeon Ghyll hotel.