In the North face, above the blue path, near the character "S". Start slightly left at a crack and exit in the belly above stones on the ground.
Park the car at Le Carrefour du Rocher aux Nymphes on the D58, follow La Route de Médicis for 800m, take La Route de la Fanfare in the slope, up to find the blue path on the other side of the crest; the boulder is 80m to the left.