Born from the centuries-old works of fire and ice, Sancy has become the jewel of the Massif Central… Raised from the bowels of the earth, carved out by glaciers, its ridges and valleys naturally draw our footsteps. The crossing of the Green Valley transports you to the heart of this ancient struggle between lava and ice and makes you witness it. This Trail will be magnificent, made of original routes, the inhabitants of this valley will welcome you as best we can … by opening and in some cases only for you their paths … unique and privileged points of view on the summits, on the lake. The pace of changes in terrain will be amazing. A land, a place created to live there, and to run …