Park in the large car park at Venterol cemetery.
(S/E) Turn right and follow the yellow marked trail towards Trou des Belles (Trau du Boli in Provençal). You will reach a tributary of the Ruisseau de Grieux.
(1) Cross it via a small, easy passage on the 3 m rock. Continue along the path to Torrent du Grieux. Follow it before crossing it and continue on the same path, which begins to climb. The yellow markings are no longer visible, but continue on the old red and white markings of theGR® 9 variant. You will reach a crossroads marked by a small cairn.
(2) Take the path on the right and, after a steady climb through the woods, you will reach the Col des Vaux (magnificent panorama of the mountains of the Drôme Provençale).
(3) Join theGR®9and follow it to the right (red and white markings). The last fairly steep climb to the summit of Montagne des Vaux (panoramic view of the Tricastin valley with Valréas and La Lance).
(4) Begin a short descent on the other side to quickly reach a fork.
(5) Leave theGR® here and take the ridge path on the left. Continue along the ridge path until you reach the crossroads.
(6) Turn right and descend onto theGR® 9.
(7) Follow the same route as on the way up to reach the Col des Vaux. Stay on theGR® and continue to the Col Flachet.
(8) Ignore the path that branches off to the right and continue on theGR®9to the left, on the surprising marl path (ancient seabed). Cross the Ruisseau de Flachet stream and arrive at a crossroads in a hairpin bend.
(9) Leave theGR®, take the path downhill on the left, cross the Ravins de Sigalet and Dauphinelle ravines, then follow the Sauve to reach a bridge.
(10) Cross it to the right, then take the tarmac road to the Le Cabanon sign (Ferme Viarsac on the IGN map).
(11) Take a barely visible path to the left of Le Cabanon which descends, cross the river (if the water is low) and continue to the right on a beautiful shady path to reach Les Auches at the entrance to the village.
Important note: if there is too much water, see the alternative route in the practical information section.
(12) Continue along the road to reach Venterol and the cemetery car park (S/E).

