At Estoublon, turn right after the bridge; the gorges are signposted 5km ahead. Park on the right in the car park.
(S/E) Walk along the road for a few metres, cross the bridge and immediately turn right through the barrier. Follow the path to a bridge on your right over the Estoublaiss.
(1) Cross over and, on the other side of the bridge, there is a large signpost with possible walks. Turn left, signposted Chapelle Saint-André, sentier de Valbonnette (recently re-marked in yellow, all along the main route). After passing under a rock, continue until you reach a crossroads.
(2) At the crossroads, go down to the left towards the torrent, which you cross on a footbridge. The path then climbs, before descending again to the water, which you cross on a double footbridge. The path gradually climbs up to the crossroads at the chapel.
(3) Turn left at an acute angle and climb northwards for around 700m. At the T-junction, turn left (signposted Chapelle Saint-André). The chapel is reached by a stony path.
(4) Retrace your steps, turn right at the first crossroads and rejoin the crossroads.
(3) Keep going straight ahead (south-south-east) until you reach the Estoublaisse, which you cross on a new footbridge. Turn right and climb gradually. You will come to a crossroads.
(5) On the left, take a small diversions to see the ruined house with its central pillar. Alternatively, turn right and follow the yellow signs.
(6) A little further on, you pass the ruins of the hamlet of Valbonnette with an old bread oven on the left. Continue north then north-west.
(7) At the next crossroads, turn right where a "car park" sign indicates the way back. Wind your way downhill, generally heading north. After a long descent, you will come to the first crossroads you passed on the outward journey.
(2) Turn left, walk alongside the river and then cross it on the footbridge to reach the parking area on the left (S/E).