The start is 4 km from Murs. From Murs, take the D 102 A towards Joucas. About 500 m from the village, turn right onto a small road (signposted Le Mourre Blanc) and park at the end (start ofthe GR® de Pays Rouge et Jaune trail heading east).
(S/E) Follow the pleasant trail for 500 m to the intersection (signposted La basse Auvières).
(1) Turn left (GR® de Pays) and continue for 800 m to reach Baume Brune.
(2) Then descend to the left (south-west) on a winding path to join the Bois d'Audibert track, which you follow for barely 200 m before continuing on the red and yellowGR® de Paystrail through pine forests, olive groves and meadows before reaching the pretty hamlet of Les Grailles.
(3) Then begin the approach to the gorges heading north for about 400 metres, continue along the red and yellow trail which climbs up to a balcony, then turn right at the signpost onto the trail which zigzags down to the bottom of the gorges. 300 metres further on, you will arrive at the Moulin Cabrier (ruins), which you must go around on the left. The path then follows the superb béal (water channel) carved into the rock.
You will then reach a ladder with ten rungs that leads to the Pas de Marie-Hélène overlooking the gorge. You will need to use your hands from time to time. Be careful on the rocks as they are slippery. Continue along the path through the gorges, crossing over and following the balcony paths to reach a narrow passage that you must descend, equipped with steps and cables, to return to the bed of the gorges.
The trail markers continue through the sometimes lush vegetation and lead to a magnificent wide canyon (or ravine).
(4) Continue through the wild gorges at this point to reach the ruins of the Jean de Mare mill.
(5) Take the path that leaves to the left of the mill to reach the intersection of the paths at the signpost, Jean de Marre. 200 m further on, take care to turn right (yellow markings) and cross the gorges via a path that is not very clear at first...
(6) Climb the steep but short path to the intersection (Lauzière) with the track.
(7) Take the track on the right for about 500 m, then turn left (Les Trois Évêchés sign).
(8) Descend this path through holm oaks to the boundary marker (Les Auvières).
(9) Continue eastwards (towards Joucas) to reach the La Basse Auvières marker (already seen on the way there).
(1) Continue straight ahead to return to the vehicle left at the start (S/E).
Allow 5 hours for this hike, not 3 hours 45 minutes as indicated.
