La Fenetre (The Window) is located on "Pas de la Fenetre" in "La Grande Moucherolle" mountain near the ski area of Villard-de-Lans. This massive arch has an estimated span of 15 meters. It was located on Regional Natural Park of Vercors. IGN topographic map Top 25 number 3236 west Villard-de-Lans (pleat D3). Reference Arch Hunter Book FR31.