This area is located in between Apremont Envers and Apremont Désert. Apart from the boulders of La Fissure des Alpinistes, Extra Balle and some numbers of the orange circuit of Apremont Envers, all the problems are very recent.
The simplest access consists in following La Route de la Solitude from the parking lot of Bas Cuvier, and then La Route de Barbizon à Fontainebleau on the right. The sector "Extra Balle" is reached in 150m by turning right at La Route du Désert. The sector "Furtif", which is 100m up the slope at a fork, can directly be attained by following a small path 50m after La Route du Désert. This latter path gives also access to the third sector "Antimatière".