The hike starts at a place called "Cascade des Sept Laux" (there is a signpost), on the section of the Col du Glandon road that is now completely closed to traffic.
(S/E) Take the path that climbs above this old road. The climb is quite steep from the start, but concrete steps and cables make this initial ascent easier and safer.
The route continues over large boulders and then through numerous hairpin bends, some of which are quite tight. The path crosses the Ruisseau des Sept Laux stream several times.
After climbing some 800 metres, you will reach a small plateau, which is very welcome!
(1) Continue on and, about ten minutes later, you will reach a small unnamed lake and, just a little further on, Lac de la Sagne. Photographers will not want to miss capturing the reflection of the Grand Pic de Belledonne (2978m).
(2) Continue on a much gentler climb to the charming Lac de la Corne, which spreads its waters across a green valley.
(3) Then, still at a leisurely pace, arrive at Lac Jeplan, closed off on one side by a massive rocky outcrop.
(4) Walk along the lake and, after a final effort to climb a small hill, reach the Col des Sept Laux, which overlooks Lac du Cos.
(5) After enjoying the location, return to the car park via the same route you took on the way there (S/E).

