Park in the car park at the Colle Douce crossroads.
(S/E) Head north-east and take theGR®49(white and red markings) along the tarmac road for about 300 metres.
(1) Leave the road and continue on theGR®49to the left. At the first crossroads, turn right and head for the Col des Sacs.
(2) Leave theGR®49and take the path that climbs towards the large rock, passing between the two wooden posts to rejoin theGR®49on the other side.
(3) Turn slightly right, continue on theGR®49, ignoring the paths branching off to the right and left, until you reach the Maison Forestière du Malpey.
(4) At the crossroads, head north on the Route du Malpey. After about 60 metres, turn right, following theGR® trail, and keep to the right to join the Estarpe du Cheval track. Follow it to the left for about 50 metres.
(5) Turn right onto theGR®51, which crosses the road twice before reaching the Mont Vinaigre car park. Continue right on theGR®51, which climbs up to Mont Vinaigre, crossing the access road several times.
(6) At the Mont Vinaigre viewpoint, continue on theGR®51, which descends to a wide track.
(7) First turn left then right with theGR®, walk about 50 metres (biological reserve sign) then leave theGR® which turns left and continue straight ahead to a wide track. Follow this track to the left to the Col de l'Aire de l'Olivier.
(8) Continue straight ahead, taking the first track on the left of the cistern.
(9) At the next junction, continue straight ahead, passing to the left of a white pillar. Here, the path is slightly hidden by vegetation. Continue to the Colle Noire crossroads.
(10) Cross the track, turn right immediately and continue straight ahead until you reach the wide Castelli track. Cross the bridge, walk to a crossroads and take the first track that climbs to the right.
(11) Take the small track on the left, which is barely visible. There is a cairn built by hikers marking the start. Continue straight ahead, keeping a west-southwest direction, and reach a crossroads just before a small lake. As you approach the lake, the track is no longer visible, but you can follow the azimuth as the vegetation is low.
(12) Turn left and once at the bottom, turn left again, crossing the ford to reach another junction at the edge of another lake.
(13) Turn left, join the Castelli track and follow it to the right until you reach a three-way junction.
(14) Turn left and continue along the track, which winds its way back to the car park at the start (S/E).
