Cascade du moulin de Vermondans, Waterfall in Plaimbois-Vennes, France

Cascade du Moulin de Vermondans is a waterfall located near Plaimbois-Vennes in the Doubs department of eastern France. The water drops over rock formations, creating a narrow pool at its base surrounded by dense woodland.

The stream that forms the fall was channelled through a reservoir to drive a mill built in 1512, which ran for more than four hundred years until 1952. Up to four works operated nearby, among them a sawmill destroyed by fire in 1945. A restored building of the old mill still stands just below the cascade.

The stream that feeds the fall runs underground before emerging from an elliptical natural gallery at the top of the cliff. The water then descends 25 metres and deposits the tufa formations visible across the rock face. The name comes from the mill of Vermondans, built in 1512, which the stream supplied through a holding pond.

A small road links the Reverotte valley, below Pierrefontaine-les-Varans, to Plaimbois-Vennes; the waterfall sits at a hairpin bend with a car park. A restored building of the old mill stands just below. Continuing up toward Plaimbois-Vennes, the Calvaire de Pierre Lamadou, erected in 1863, marks the spot near the hermit's grotto.

The stream feeding the fall emerges from a natural elliptical gallery at the top; in low water the first 650 metres can be explored without equipment, and beyond that speleologists can continue nearly 2 km through 9 siphons.