Avoid leaving the paths and keep your dog on a leash from April to July.
Right problem in a 5-6 meters high boulder behind a little hill. Sitstart on the horizontal ledge to the right of Fest Noz and exit at the same point of that problem.
From the parking lot, follow Le Chemin du Petit Mont Rouget and take on the right Le Chemin de la Roche qui Tourne (GR) for 90m. At a pine tree on the right of the GR, follow a small path for 80m : the boulder is just behind the hill.