Ashgill Force is a dramatic waterfall set within a wooded gorge in the North Pennines Area of Outstanding Natural Beauty, near the village of Garrigill in Cumbria.

Peaty water tumbles over a lip of hard limestone underlain by black shales and thin sandstone beds.

The softer rock erodes readily, undercutting the limestone above; over thousands of years this process has caused the falls to migrate upstream, carving the gorge in their wake.

A short footpath from Ashgill Bridge on the B6277 — about five miles southeast of Alston — leads down into the gorge.

Uniquely, a path allows visitors to walk behind the main curtain of water into a cave-like recess, with further cascades accessible along the lower gill. The falls can also be reached on foot from Garrigill via the South Tyne Trail.