Cascade de Mérelle, Natural waterfall in the Vosges Mountains at Gérardmer, France.

Cascade de Mérelle is a waterfall on the Mérelle stream in the commune of Gérardmer, in the Vosges massif. The water drops from a porphyry slab in two main threads, breaking white over a dark, moss-covered rock face before spreading across rounded boulders at the base. The stream then flows into Lake Gérardmer.

The Mérelle stream cuts through a slab of porphyry, a volcanic rock that gives the falls their two main threads. The stream then empties into Lake Gérardmer, which lies below in the same valley. The waterfall belongs to the Rhine watershed, and the porphyry slab is the feature that shapes the drop.

The stream feeding the cascade is the Ruisseau de Mérelle, which continues below the falls to empty into Lac de Gérardmer. The waterfall is one of the listed cascades of the Vosges massif, and walkers based in Gérardmer reach it on foot from the town side.

Follow the marked blue hiking trail from Ramberchamp stadium that leads down through the forest to the waterfall. The walk takes about 15 minutes along a well-used path surrounded by trees.

The cascade falls from a slab of porphyry, a volcanic rock whose dark surface contrasts with the bright green moss coating it. The Mérelle stream then empties into Lake Gérardmer, the lake at the foot of the town.