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The car park is on the road leading up to Chamrousse from Saint-Martin-d’Uriage, just under a kilometre past the hamlet of Les Seiglières, before a hairpin bend; the entrance is fairly easy to spot.
(S/E) The walk begins on a fairly wide forest track, which you follow for a while.
(1) A few hundred metres after leaving the car park, you’ll come to a crossroads; continue along the main road (bottom left).
(2) You’ll come to a fairly open area; a road branches off to the bottom left, but carry on along the main path which climbs straight ahead on the right.
Carry on along this path until you reach the Waterfall de l’Oursière.
(3) After about 3 km and a 400-metre climb (be warned, it’s quite a steep climb!), you’ll reach the famous Cascade de l’Oursière. A magnificent and imposing waterfall, about 80 metres high. It’s a great place to cool off during the climb when the weather is hot.
Then carry on along the path which climbs towards the Plateau de l’Oursière, situated some 100 metres higher up.
(4) When you reach a junction, carry straight on towards the far end of the plateau (the path to the right leads to the Lacs Robert).
(5) Once you reach the very undulating plateau of the Lacs de la Pra, head up to the right towards Lac Bernard and then on to Lac Longet.
(6) At Lac Longet, head left towards Lac Claret, which is now only a 5–10-minute walk away.
(7) You’ll reach Lac Claret, overlooked by La Grande Lauzière at an altitude of 1,741 metres.
After regaining your strength and taking in the view, head back down the path that descends to the left into the valley below Lac Claret.
Reach the path you took on the way up after crossing the Doménon torrent.
(5) From here, all that remains is to follow the path you took on the way up, but in the opposite direction this time, to return to the car park (S/E).
Visorando Member
Extremely difficult 
Moderate 
