Start with right angle as for Dévastation Contrôlée, traverse to the left under overhang with underclings and finish completly left.
NB: the exit needs to be rebrushed.
On the other side (West) of Route de Gironville (D449), park at the cross of this one with Rue de l'Espérance, traverse the road and follow the path on the other side for around 200m, boulder is then on the right (North), see map.