Depart from the Plateau d'Assy car park (1,070m), accessible via the D43 and then, before the sanatorium, a small road that climbs up to the left.
(S/E) Head east towards the Chalets de Varan on a good path.
(1) At a fork, take the left-hand path (north), which is passable by vehicle as far as the Chalets de Curalla.
(2). Continue along the path, which is not suitable for vehicles, towards the Chalets de Varan, where it is possible to stay overnight.
(3) Go around the chalets on the right. At a fork just behind the chalets, turn right. Head north towards the Col de Barmerousse along a good narrow path. After a steep climb with short hairpin bends, you will reach the pass (magnificent, wild setting).
(4) At the pass, take a path on the left towards the Aiguille de Varan. This path quickly becomes less marked. The end of the climb follows a ledge to the west with a good track that becomes vertiginous. A few cables help with the final ascent in two successive chimneys. The view from the summit is absolutely magnificent.
(5) Descend by the same route to the Col de Barmerousse, taking care as the route is not well marked.
(4) Head due east on a good path that descends towards the ruins of Barmerousse.
(6) The path climbs a little then winds between the hillside ravines. The going is sometimes difficult until you reach the shoulder, where you join a good path.
(7) Then head towards the Désert de Platé and, after a long traverse east then north-east, reach the Refuge de Platé.
(8) Head south on the Chemin des Egratz. This is a good, steep and somewhat vertiginous path after the pass, but without any technical difficulty. At the fork, rejoin theGRP® Tour du Pays du Mont Blanc.
(9) Take thisGRP® trail to the right, climbing slightly, until you reach a second fork.
(10) Leave theGRP® and take the somewhat monotonous path on the left through the woods to the road leading to Plateau d'Assy. Follow the D43 road for 800m and climb back up to the starting car park (S/E).
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From the Barmerousse Pass to the Aiguille de Varan, the markings are not very clear: keep your eyes peeled. The final stretch involves a short climb, with a rope crossing, which should not deter hikers. Beautiful view... From Barmerousse to Platé, the markings are new.