Direct of La P.J., to the left of Gravité, along the blue path, to the oppposite of the boulder marked "G", northridge above "La Roche d'Hercule" (yellow circuit).
Acces: from Le Carrefour du Mont Ussy, take path to the left of La Route de la Butte aux Aires, then the blue path on the left; the boulder is 50m further, after a tunnel.