Retenue de Grand’Maison ©Musée Hydrelec Opening This service provider also offers Go back to the list Opening From 30/04 to 31/10 : open daily. This service provider also offers Sport La Marmotte Le Bourg-d'Oisans Sport Col de la Croix de Fer... Le Bourg-d'Oisans Sport The loop of the passes Le Bourg-d'Oisans