フォート・ドゥ・プラズネのおすすめツーリングルート

Viewpoint above the Doubs source with beautiful views through a forest clearing to Mouthe and the Doubs river.

The source of the Doubs River is a powerful karst spring in a heavily karstified area of the Jura Mountains. It lies at an altitude of 937 meters at the foot of the forested, up to 1,419-meter-high Mont Risoux mountain range, which straddles the border between France and Switzerland. The Doubs River rises from a small, approximately five-meter-deep spring basin in a cave in the rock.

Magnificent view of the Bief de la Ruine waterfall and a bridge of the former railway line.

A waterfall with a larger pool and a smaller cascade in a beautiful setting. In front of it is a small stone lynx statue.

180 m long tunnel through the mountain, requiring a flashlight.

The Bief de la Ruine waterfall is located in the spectacular Malvaux Gorge. One of the most astonishing features of this waterfall is the fact that it only comes alive after heavy rainfall or during snowmelt. When it dries, it gives way to the spectacle of the carved stone, revealing the "Creux des Joyaux," a natural cave where the water swirls with varying degrees of vigor, polishing a multitude of limestone pebbles thanks to the force of its current.

waterfalls don't always flow

We did a 3-day mountain bike trip in this magnificent region, the routes are great 👍