Approach
10 minutes from the parking lot to the cliff. From the parking lot, reach the cabin next to the ski-lift, from there you can walk up the hill to reach the forest path (there's no indication so walk up until you reach it). On the forest path, walk up north on the forest path until you reach the sign (the sign with "Roche de Terre Ronde" written on it). From the sign, turn slightly right and walk up to the cliff.