This small natural arch is located close to L'Arche du Pas de l'Aire 2 in Isère departement of France. The slot opening has an estimated span of 1.5 meter. Photo taken in June 2015. Exposed to the elements like freeze and snow, future erosion could make this opening considerably more large. A probable quick erosion of the arch should be observed on next decades. IGN topographic map Top 25 number 3235 west Autrans (pleat E9).