Car park in the hamlet of Cours le Bas (commune of Rosis), along the D22E9.
(S/E) Take the concrete path that descends to the left and turns into a trail. Cross the Casselouvre stream and climb up the trail. Then take the track on the right and continue along the road to the entrance to Compeyre.
(1) Go up the stairs on the left and continue straight ahead along the concrete path and then the drovers' road. Cross the road and take the small stony drovers' road opposite, which climbs up through the chestnut trees. The sunken path (used for rainwater drainage) climbs and passes in front of some secadous (chestnut dryers). Climb up the track on the right for 100 metres and you will come to a turning area.
(2) Head left to cross the Serre de More and follow the balcony path (shepherds' shelters). Descend along the ridge.
(3) Cross the Casselouvre on the gneiss slabs and climb up the path opposite. It winds its way under the holm oaks and reaches a pass. Leave the ruined castle of Nébuzon, visible on the rocky peak, on your left and descend the stony path. Cross the stream, then head for the corner of the first house in Cours-le-Haut.
(4) Turn right into the alley, leave the village, follow the path that runs alongside a millstream and climb up through the chestnut grove towards the south-west. The path, lined with low walls, crosses plots of land (chestnut picking is prohibited) and joins the confluence of two streams. Cross the first stream, climb for 250 metres, then cross the second. Climb up the winding path through the chestnut trees, pass under a rocky outcrop and come out onto a track at a hairpin bend (old sheepfold: private property).
(5) Take the track on the left. It leaves the chestnut grove in a wide curve (view on the right of the ridge lined with fir trees of the Écrivains-Combattants forest). Continue along the track for about 800m until you reach a right-hand bend.
(6) Turn left onto the small ridge track, lined with chestnut trees on the right. At the edge of the forest, veer left. The path descends the slope through the broom and continues to the left along a stony drovers' road. Continue downhill to the car park (S/E).