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Park in the large car park at the entrance to Le Casset when coming from Monêtier les Bains.
(S/E) Cross the village until you reach the second bridge over the Guisane.
(1) Cross the river and follow theGR®54signs for the Tour de l'Oisans. Stay on the wide track that runs along the left bank of the Petit Tabuc torrent. Cross the bridge and start the climb, either via the track or the shortcuts that cut across the bends.
Reach a new bridge over the Glacier du Casset torrent.
(2) Take the track on the left, which quickly becomes a path, and you will reach the Lac de la Douche.
(3). Cross the lake on the low stone wall to reach its left bank. (Please note that IGN maps show the path on the right bank: this is the old path, which was moved to the left bank several years ago).
Then tackle a steep climb, made very easy by an absolutely remarkable route. You will then reach the large plain of Réou d'Arsine.
After passing the place called "Les Chalets d'Arsine" (sign), continue for about 100 metres to a crossroads.
(4) Take the path on the left (look carefully for this path as the cairn that marked it seems to have disappeared).
Follow this good path which joins the one going up to the pass, stay on this new path, cross the bridge over the stream flowing from the lakes. You will then reach the two lakes, now separated by a dam.
Note: if you cannot find this path, continue to the Col d'Arsine and take the wide track on the left that leads to the lakes.
(5). Return by the same route. An alternative route is possible by reaching the Col d'Arsine, then turning right onto theGR®54to reach the cairn crossroads.
(4) Retrace your steps to return to the car park (S/E).
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