(S/E) From the car park, take the road eastwards and after 200 metres, turn right onto the road that goes around the riding centre buildings and runs alongside the car park. Continue along the path that extends this road until you reach the entrance to the hamlet of Le Rouret.
(1) Turn left onto a path heading south.
(2) Just after a concrete crossing over the stream, turn right. Continue to the hamlet of Les Laurents Hauts. Turn left onto the paved road, which continues as a dirt road. At the first intersection, leave the main road on your right.
(3) After a short climb, at a three-way junction, take the right-hand path. Continue until you reach a wide path on the left. Continue straight ahead, ignoring the paths on the right and left, until you reach the D202.
(4) Cross the road and take the path furthest to the right, which runs almost horizontally. A small, inconspicuous wooden sign indicates the direction of the Fontamille spring. Leave a path on your left, then another on your right, and continue to this spring (spelled Fontameille on the IGN map) and then to the ridge.
(5) Turn left and follow the path on the ridge, marked in white and yellow, until you reach the D202 at the Col de la Serre.
(6) Take the road on the right, descend to the first bend and turn onto a path on the left. This continues along the mountainside at roughly a horizontal angle. Leave a path climbing up from Bessas on your right.
(7) Leave a path climbing up to the summit of Puy Lacher on your left and turn right to descend towards the Col de Trépaloup. Continue straight ahead towards the Col de la Cize.
A little further on, still following the white and yellow markings, leave the main path and take a trail on the right. Continue along the ridge towards Serre de Colombou.
(8) At the hiking sign, leave the path to Bessas on your right and continue towards Col de la Cize.
At the next sign (be careful, it is difficult to see in the vegetation), leave the Col de la Cize and take the path on the left that climbs towards the ridge in the direction of Notre-Dame des Songes.
On the descent after the ridge, be careful of slippery rocks in wet weather in the first section. Continue following the white and yellow markings.
(9) At a four-way intersection, continue straight ahead and follow the red and white markings forthe GR®4.
Pass by the Notre-Dame des Songes chapel. After the chapel, ignore the first path on the left.
(10) Immediately after, leave theGR®4and take a wider path on the left. About 50m after, take a path on the right that leads to the ruined village of Chastelas.
(11) Take a path on the right, cross a grassy area and piles of stones - probably the remains of the castle - to reach the rock at the end of the promontory, where you will have a beautiful view of the valley.
Retrace your steps to the last crossroads.
(11) Turn right onto the path that descends and continue through the ruins along the narrow streets and steps to the bottom of the village, where you will rejoin theGR®4trail.
(12) At the Font Vive hiking signpost, turn left towards Résurgence. Walk along the bottom of the village on the west side and take a path on the right that descends towards the Font Vive spring.
(13) After the spring, the path that runs along the stream on the right bank is now blocked. Retrace your steps to the bottom of the village of Chastelas.
(12) At the hiking signpost, rejoin theGR®4and keep left at the fork with a cross. At the next fork, note the large cross on your right and continue between the buildings until you reach a track that runs along the valley. Follow it to the right and continue to the end of a paved road.
(14) Turn left, cross a car park below and continue along a path that crosses the stream. Continue to follow theGR®4markings.
At the top of a climb, leave theGR®4, which turns right, and continue straight ahead.
(15) At the next junction, leave the white-and-yellow marked path on your right and continue along a stony track that climbs into a pine forest.
Join the road that turns left towards the equestrian centre and the car park (S/E).
an interesting route, but it lacks viewpoints and, apart from the ruins of Chastelas and the Font Vive spring, it is somewhat uniform, although this is compensated for by a very pleasant smell of tin.