From the third parking lot from Courances to Arbonne, follow le chemin du petit Mont Rouget 300m to the South, take le chemin de la Juniperaie to the left for 200m, then le chemin de la gorge aux Poiriers for 250m. The boulder is then 150m from the path, near the summit of the hill, exposed to the South-East (about 15mn).