L'Arche du Château (Castle Arch) is located below the rim of Cirque d'Archiane near the Sheepfold of Tussac on Reserve Naturelle des Hauts Plateaux du Vercors in Drôme department of France. The arch has an estimated span of 2 meters. IGN topographic map Top 25 number 3237 west Glandasse pleat B6.
