From 26/06 to 31/12.
Free access.
At an altitude of 2,207 metres, the Aouille (peaks in patois) of the Criou is an essential walking destination.
Between rocks and mountain pastures, the view at a glance embraces the valley, the Buet and its 3,200 metres (nicknamed the "Mont Blanc des dames", the highest point in Sixt-Fer-à-Cheval), the Sallière tower, the Pointe Rousse des Chambres (which can be reached from the Folly refuge) and the Dents Blanches massif.