Park in the car park at the bottom of Flaine.
The first stage is to reach the top of the Aulp de Véran cable car via the ski slopes (Méphisto).
(S/E) Head back up towards the end of the resort towards the Grandes Platières cable car departure point.
(1) At the chalets, turn right and follow the track up the slope.
(2) At the crossroads, turn right again (still on the slope) and climb up to the Grand Grenier ski lift departure point.
(3) Turn left (basically continue climbing) and go to the top of the Aup de Véran cable car.
The second stage is to reach the top of the Grandes Platières cable car by crossing the sharp limestone pavement field.
(4) At the Aup de Véran cable car, turn left onto the sharp limestone pavement. The trail is marked with two red and white lines (GR®96variant) and numerous cairns. Roughly speaking, it passes to the left of the chairlift departure point, then continues to the right to go around the cliff and reach the Grandes Platières from behind (for those who are familiar with the area, you pass by the Méphisto supérieur piste).
(5) At the Col du Colonney, turn left towards Grandes Platières (red markings).
Caution: stay close to the markings and watch your step, as the sharp limestone pavement is dotted with cracks, some of which are very deep chasms. Also be careful of snow bridges if there is still snow on the ground.
When you arrive at the top of the Grandes Platières cable car, you can admire the view (panoramic table) while waiting for those who have chosen to take the cable car (the cable car operates all summer).
Third stage: descend
(6) Follow the path. Pass the cable car arrival point and continue straight on across the Platé desert.
(7) Pass to the left of Tête Pelouse.
(8) At Col Pelouse, turn left to descend to Flaine and not Samoëns.
(9) When you arrive at the resort (at the bottom of the Balacha ski lift, at the top of the yoghurt pots), turn left. Follow the road to the basin surrounded by sharp limestone pavement.
(10) Turn right (towards the Chalet des Cascades). Pass between the chalet and the tennis courts. On your right, there is a small path that descends to the Grandes Platières cable car station. Descend via the piste.
(11) Turn right towards the car park (S/E).

, thank you!