When you arrive at the roundabout of the casino les machines à sous de Vals les Bains you have to turn right past the bridge then turn left after the Bourganel house. Continue this road for 150 m then pass in front of the thermal baths on a one-way road then turn left on the bridge and at the end of the bridge turn right and drive 50 m then immediately turn left after the flower shop.
Drive about 1 km then take a small bridge on your left and go up this small road for 2.5 km.
On your right when you see a small blue panel on which it marks the PLAGNOL go forward a few meters to take the big bend which turns right and IMMEDIATELY after this big bend (about 8m) turn right on a tarmacked road pass in front of the chalet and climb to the top.