Cascade de Syratu, Waterfalls in Mouthier-Haute-Pierre, France.

Cascade de Syratu is a waterfall with three distinct sections, the uppermost featuring a sheer drop of about 50 meters from a plateau at 600 meters elevation. The entire feature spans about 230 meters in height as it descends through wooded terrain before meeting the Loue River.

The waterfall's upper drop ends on a ledge where the stream was diverted during construction of the Gorges de Nouailles road linking Mouthier-Haute-Pierre to Saint-Gorgon-Main, so the water would not fall onto the roadway. The stream then makes a second vertical drop of 32 m to road level and passes beneath it in a channelled slide. In 2022, over-visiting led the municipality to close the last stretch of road to the site.

The stream feeding the falls is partly diverted at a ledge below the 50-metre upper drop, a channel built when the Gorges de Nouailles road was cut so water would not fall onto the roadway. The lower cascades, coated in tufa, are reached on foot from the GR 590 via paths starting on either side of the small bridge over the Syratu stream.

The lower section is accessible via an old bridge crossing the Loue River, while the middle section can be viewed directly from the mountain road. The best time to visit is after rainfall when water volume is at its fullest.

The lower sections are draped in tufa deposits that give the water a milky appearance when sunlight filters through them. This geological feature develops as water continuously flows over the limestone-rich rocks of the Jura.