From Les Arcs 2000, head to the start of the slopes to find the sign: Arc 2000, alt. 2139m.
(S/E) Follow the track towards Lac des Moutons “sentier des Lacs” 2h05.
(1) Leave the track and turn left onto the path, following the sign: Lac des Moutons “sentier des lacs” 1h55 to Lac Saint-Jacques.
(2) At the lake, continue along the path towards Lac des Moutons "sentiers des lacs" 1h40.
(3) At Plan de l’Homme, continue along the path towards Lac des Moutons “sentiers des lacs” (0h50).
(4) At Lac Marlou, follow the path towards Lac des Moutons "sentiers des lacs" 40 mins.
(5) At the fork after the lake, continue straight ahead, climbing towards Lac des Moutons on the “sentiers des lacs” trail (0h20).
(6) At this sign, continue along the path in front of you to reach Lac des Moutons in a few minutes.
(7) Enjoy the lake before retracing your steps back to the previous junction.
(6) Turn left and head down towards Col de Chal 0h20.
(8) From Col de Chal, head straight up the track to the summit of Transarc and Arcabulle.
(9) From the signpost, follow the sign for Aiguille Grive to the left (0h30). At the start of the path, a sign reminds you of the importance of not cutting across the path as it winds its way up to the summit. The climb is short but steep!
(10) What a view from the summit! There is an orientation table. Descend via the same route.
(9) Leave the path you took on the way up and walk a few metres to the signpost located between Transarc and Arcabulle.
(11) At the signpost, follow the signs for Lac de la Vallée de l'Arc (0h35), taking the path that descends along a small ridge to the track above a large artificial lake.
(12) Turn right onto the track that descends and follow it back to the starting point (S/E).

The route must certainly have been even more beautiful than what we saw, so we’ll have to do it again if we return to the area at a different time of year!