Crolly Waterfall sits on the Crolly River on the outskirts of the Gaeltacht village of Crolly (Croithlí) in west County Donegal.

The river forms the traditional boundary between the Gweedore and The Rosses districts, flowing through rolling green landscapes before tumbling over the falls.

A gate at the roadside, directly across from the local whiskey distillery, provides access to the site. There are actually two cascades along this stretch of river: a smaller one visible from the road and a lesser-known spot further down a country lane.

The waterfall gains notable volume and presence during wetter months, and a short, level path leads to the riverbank where the rush of water over rocks can be heard clearly.

The Crolly River is also well regarded by anglers for its clean, oxygen-rich waters, with Atlantic salmon running in autumn and brown trout present year-round.