Grenoble is a good jumping off point for expeditions to the Parc Natural Régional du Vercors which lies southwest of the city. The tourist office has some information, but serious walkers should make straight for the Maison de la Randonnée, 7 rue Voltaire. There is also help at hand for cyclists from Mountain Bike Grenoble, 8 quai de France, who mend and hire out bikes, plus suggest itineraries.