From the village of Bessans, take the D902 road towards Bonneval-sur-Arc. At the "La Bessannaise" holiday centre, take the road on the right towards La Goulaz and Les Vincendières. Park in the car park at the entrance to the hamlet of Les Vincendières.
(S/E) Continue towards the hamlet of Les Vincendières. Go about 150 metres past it and leave the road. Take the path on the left, which runs alongside the road and rejoins it further up. The path starts again on the right a little further below, passes in front of an oratory and joins the hamlet of Avérole.
(1) Continue along the track on the right, which starts at the Oratoire Sainte-Thérèse, below the Chapelle Saint-Pierre. Follow it to the Plan du Pré, where the gorge narrows. Climb up the path on the left, which leads to the Refuge d'Avérole.
(2) Descend towards Plan de Revallon via the path that curves to the right. It heads east, then crosses the Ruisseau du Veilet on a footbridge and continues towards the Vallon de la Lombarde. Before the torrent, turn left to climb towards the Pas des Eublats (before the last rocky outcrop).
(3) Follow the path, which climbs a little more to pass another rocky outcrop, then approaches the torrent. Follow the torrent to the footbridge at Pas de la Mule.
(4) Cross the stream and climb up opposite to reach the Cabane des Bergers.
(5) Head back down the valley on the left bank of the stream. The trail gradually descends and passes under the Cascade de la Lombarde waterfall.
(6) Continue climbing towards the Oratoire Saint-Antoine-de-l'Envers. Enjoy the view of the Refuge de l'Avérole, the valley, the Glacier d'Arnès and the Ouille d'Arbéron.
(7) The descent becomes steeper but is not difficult. Reach the flat area at the bottom of the slope.
(8) Leave the start of the trail to the torrent on your right and head left. The trail overlooks a track that you will join towards the Fenêtre de l'Île (an EDF tunnel with cool air coming out of it).
(9) Follow the path on the left bank of the Torrent d'Avérole. This crosses the various Chalanches (area of serac falls from the Charbonnel Glacier) and then joins a track. Follow it, ignore a path on the right and continue to the next crossroads.
(10) Cross the Torrent d'Avérole on the bridge and rejoin the road you took at the start. Continue downhill for a few metres to reach the Vincendières car park (S/E).