Avoid leaving the paths and keep your dog on a leash from April to July.
From Paris, take the bypass of Milly-la-Forêt and turn left at "La Croix St-Antoine" before the traffic lights. Follow the non-asphalted road for 1km to the parking lot of La Gorge à Véron. Take the Chemin de la Gorge à Véron; after several bends, follow a small valley to a sort of pass at the top of the hill. The boulders can be found 50m to the left and 100m to the right of it.