By car: in the Drôme department, via the D578 which serves Omblèze, take the Route d’Ansage (D578a) towards the Chute de la Druise, then, at the fork, take the Chemin de la Druise on the right. Park in the shaded car park reserved for vehicles under 1.8 m in height.
(S) Turn right as you leave the car park. Immediately, in front of a signpost, leave the track and head down the path on the right into the woods. After a few bends and a 100-metre descent, you’ll reach a junction (elevation 472m). Follow the course of the Gervanne to the right to reach, at the bottom of a gorge, its beautiful 70-metre-high waterfall.
(1) Turn back and return to the car park.
(S) Take the Chemin de la Druise again, then the D578a. At the fork, continue along the D578a to the left to reach the junction in front of the Hôtel du Moulin de la Pipe.
(2) Walk right along the D578 towards Omblèze until you reach a signpost at the entrance to the first small car park.
(3) Climb the path up the embankment on the left. Pass in front of the Cascadelle de la Pissoire waterfall on the Ruisseau de Corbière and walk through the woods to reach a fork.
(4) Ignore the path on the left and head right towards Le Pêcher du Bas. Cross the Ruisseau de Corbière, and at the junction in the hamlet, continue straight ahead. After 150 m, at the fork, turn left. Descend via a few hairpin bends to follow the right bank of the previous stream and enter the unusual and shady Canyon des Gueulards.
(5) Nestled between two vertical rock faces, this canyon remains dry in summer. The uphill traverse, dotted with cairns amidst moss and ferns, features two entertaining, secured crossings. At the end, ignore the marked path to the right and take the one on the left. Cross the footbridge then climb up the hillside of the valley to reach a junction.
(6) Turn right onto the GR®9. Immediately after the Moreaux farm, at the hairpin bend, leave the track and follow the path opposite. About 300 m further on, at the T-junction (elevation 834 m), keep left. Pass La Morelle farm, cutting across the hairpin bend in the road via a shortcut. Return to the road before leaving it for a path running alongside it to the right. Climb the opposite slope and join a road, the Chemin de Tête Noire.
(7) Take this road to the right, passing the farm of the same name. At the end of the road, ignore the side paths and follow the GR®9 trail straight ahead alongside a shed. Ignore two side paths and further on you’ll reach a junction (elevation 934).
(8) Turn right and, at the fork 150 m further on, turn right, then left at the next fork. Ignore the side paths and further on you’ll reach a junction.
(9) Follow the path down to the left to reach the D199. Take this road to the left and continue onto the D70 at the entrance to Léoncel (elevation 917m). Turn left and then left again towards the stopover lodge at the remarkable 12th-century Cistercian abbey. (E)