Follow the Route des Satyres to the top of the cirque, the boulder is located on the other slope, slightly to the east (left). Sitstart under the pillar and traverse to the left and exit with the left arete.
Take Route de Valmy towards Rocher des Demoiselles. Turn right onto Route des Satyres (a barely visible sign on a tree). This is more of a path that leads into a sort of cirque.