Défilé d'Entre-Roches, Canyon in the Doubs valley, Doubs department, France

The Défilé d'Entre-Roches is an eleven-kilometre canyon of the Doubs between Ville-du-Pont and Morteau, followed by departmental road 437. Upstream, limestone cliffs rise in overhanging tiers above the river, with pale streaks running down the grey rock and a marked meander; below the ledges, scree and dry grass slope to the road.

The gorge has been a protected site since 1939, when it was classified by the DREAL for its picturesque character. It also forms part of a type 1 ZNIEFF natural zone covering 802 hectares. The Doubs has cut through the limestone here between Ville-du-Pont and Morteau, creating overhanging cliffs and a pronounced meander.

The gorge lies within the Free Republic of Saugeais, a self-declared micronation of eleven communes in the Haut-Doubs. Its president is elected for life, and the title passes with the Hôtel de l'Abbaye in Montbenoît, where visitors can see the abbey that gave the republic its name.

Several parking areas are positioned along the route to serve as starting points for exploration and hiking trips. Walking along the paths that follow the river is the main way to experience and appreciate the gorge.

The canyon walls support specialized plant species adapted to the rocky conditions found in the Jura mountain region. These plants thrive in the cracks and ledges of the steep walls and are rarely seen elsewhere.