From Privas, follow the D2 then the D344 towards Pranles. Before entering the village, turn left onto the road towards Le Clap (lodge). Park in the small Chirouses car park (4 spaces) above the large building of the Domaine du Clap.
Yellow-white markings
(S/E) With your back to the car park, follow the path that climbs up to the right. It starts off as a beautiful paved slanting street and then becomes stony. Pass several cattle gates (close them behind you) and follow the main path that leads to the Col du Muret.
(1) Continue straight ahead to begin the descent (ignore a vague path on the left). After a short stretch through the woods, the path comes to a bend. Turn right to stay on the main path and continue for 400 m to the Goutoulas farm. Pass the houses and leave the main path to descend onto a smaller parallel path on the left. Continue for 50 m after a crossroads to the Goutoulas signpost.
(2) Head right towards Saint-Étienne de Serres (leave the path on the left, which will be the return route). Descend through the chestnut trees, leave a path on the right (not marked on the map) and join the Pizette signpost at the entrance to the hamlet of the same name.
(3) Turn left onto the paved road to cross the hamlet. At the end, when the road curves to the right, follow the lane that branches off to the left between the houses at a row of letterboxes. Descend to reach the bottom of the hamlet on a small plateau. Turn left and follow the path that continues between the low walls (ignore a path that climbs up to the left towards the hamlet). Continue downhill until you reach a crossroads (old wooden signs). Turn right and follow a few hairpin bends to reach the Pont Merlet bridge. Cross the bridge and continue for about 20 metres to reach the signpost.
(4) Turn left towards Croix de Creysseilles, go through the gate and follow the path that climbs steeply into the forest. Be careful, about 200m further up, leave the main path and turn left onto a small path that is not very visible at first but is well marked (the route is offset on the map). Follow this path through the chestnut trees until you reach the hamlet of Magerouan at the Place signpost.
Continue left on the tarmac road to cross the hamlet towards Croix de Creysseilles. Reach the Magerouan crossroads at the exit of the hamlet. Turn left towards Eyrebonne and immediately on the right of the path you will see an open cemetery (no fence).
(5) At the corner of the plot, take the path on the right that continues along the side of the forest. Go through two gates, then after passing through some box trees (the route on the map is slightly off), the path turns left to join the other side. The path widens; go through another gate, ignore a path on the right just after and continue straight ahead.
After a left turn, you will reach a crossroads. Take the left-hand path, go through more gates and follow the path along the hillside (beautiful views of the Pizette and Magerouan). Cross another area of boxwood (or what remains of it!) and you will arrive at Eyrebonne.
(6) Turn left towards Goutoulas for about 50 m. At the crossroads, turn right onto the grassy path that passes under the hamlet and then moves away from it, descending in a few hairpin bends into the hollow of a valley. Cross a second valley and, at the third, the path climbs up to the right for a while, following the dry stream bed, then turns left for a short but steep climb. You will arrive at a wide path at the foot of a scree slope.
(7) Turn left onto the path, then immediately leave it and head right into the scree of the Chirouse volcano, following the numerous cairns. After a short steep section, the trail skirts around the volcano, crossing the entire scree. Numerous cairns, resembling land art, decorate this magical place. At the end of the crossing, a sign provides information about the Chirouse volcano. Reach the forest and then, via a good path on the hillside, return to the houses of Goutoulas. Pass under the houses and return to the crossroads you passed on the way there.
(2) Turn right and follow the same path back up to the Col du Muret.
(1) From the pass, descend along the path to the car park (S/E).