Le Chas d'Anse (Eye of the Needle of Anse) is located on the Gorges d'Omblèze on the cliff above the hamlet of Chanteloube near the mountain pass of Anse in Drôme departement of France. The opening has an estimated span of 5.5 meters. IGN topographic map # 3136SB Bourg-de-Péage (pleat C9).
