Fenêtre de Plautret (Plautret's Window) is located on Rochers de Plautret on Glandasse mountain (Hauts Plateaux du Vercors Natural Reserve) in Drôme department of France. The entrance opening has an estimated height of 8 meters, 20 meters of depht and the opening on the side cliff has 12 meters of height. A rappel of 20 meters is required to access down the opening and two rappels (40+45 meters) with a belay station on a sheer cliff to escape out of the pit. IGN topographic map Top 25 issue 3237 west Glandasse (pleat A4).