Isolated roof in a natural bivouac on a small and quiet square along the bue path. Start as for L'Odyssée de l'Espèce, traverse to the left, follow the the lip of the roof to the right and exit with the crack as for L'Odyssée des Variants.
From the N7 (direction Fontainebleau), turn right at Le Carrefour du Grand Veneur, take the D301 and park the car 200m to the right after the bend. Follow the blue path n°6 for 10 minutes; the boulder is just after the crossing of the paths n°6 and n°6.6.
