Le Trou du Platary (Platary's Hole) is located on the crest of Platary mount near "Col du Prayer" (Prayer pass) in Isere department of France. The arch has an estimated height of 7 meters. A yellow marked trail starts from Prayer pass (on side of the road D7) and goes up to the top of the Platary. The arch is located by red star at "Trou" on the IGN topographic map top 25 number 3237 west "Glandasse" (pleat A8).