At the top of the Dent de Crolles (2,062 meters), the view emerges over the entire Grésivaudan valley. Second highest summit of the Chartreuse massif after Chamechaude at 2082 meters, its ascent is however more technical.
A must-see natural site at the foot of the Hauts de Chartreuse nature reserve, the circus offers a walk between forest and torrent to discover its 4 waterfalls, and access to the resurgence cave of the Guiers Vif spring.