Etape 8 Col d'Ornon Alpe du Grand Serre

Starting from the car park at the church in the hamlet of Chantelouve, this circular route, mainly through forest, offers numerous views of the village hamlets. The aim is to reach the shepherd's summer chalet and the pastures where the local sheep graze.

Ascent to Le Rochail from the hamlet of Les Bosses via Lac du Vallon. A very interesting route, both visually and technically. Be careful, however, as the slopes are steep and the ridge walk between the Col du Rochail and the summit can be dizzying.

At 3,049m, Pointe de Malhaubert is the highest of the peaks surrounding Lac du Vallon above Chantelouve, offering a unique, unobstructed 360° panorama of all the Alpine massifs.Ibex, chamois and griffon vultures frequent the nearby peaks and slopes. Warning:Reaching the summit requires proficiency in ridge walking (grade 3 climbing, with constant exposure) both on the ascent and descent. The snowfields require crampons and an ice axe, as well as an early start.

A wild hike around the Vaunoire waterfalls and along the exposed ridge leading to the Grand Armet (2,792m), a viewpoint offering a unique panorama of the Dévoluy, the entire eastern barrier of the Vercors, the Taillefer, Belledonne, Mont Blanc, the Grandes Rousses, and the whole of the Oisans. Much of the route is off-trail and requires a (very) good sense of direction or the use of a GPS. The ridge, almost 2 km long, presents no technical difficulty but is exposed.

A hike that begins in the atmosphere of the undergrowth and ends in a high mountain setting.

The last stage begins at the large Vallon Lake. You will then cross the Col du Rochail, which rises to an altitude of 2,756 metres. After this climb, your path will take you to the Refuge des Sources, then to Villard-Notre-Dame, a village offering a superb view of Bourg-d'Oisans, your final destination.

In an hour, you can reach a 360-degree viewpoint offering views of four Alpine massifs: Taillefer, Belledonne, Grandes Rousses and Écrins. The hike starts in the picturesque village of Villard-Reymond, which can be reached via a narrow road (with around 20 hairpin bends) from the Col d'Ornon. It begins in the shade of the undergrowth before reaching a ridge and then the Col de Saint-Jean. A steep climb, but under pine trees, takes you to the summit of Prégentil, where you can enjoy breathtaking views of peaks reaching 3,000-4,000 metres.

Starting from Villard-Reymond, there is a very pretty circular walk under the Grand Renaud cirque, through the mountain pastures and back via the Croix du Carrelet.