This amazing formation (a double arch) is located on the side of the cliff on Font d'Urle area near the village of Vassieux-en-Vercors in Regional Natural Park of Vercors. IGN topographic map Top 25 number 3136 east Combe Laval (pleat H3). The arch was named for Bernard Jalliffier-Ardent (1942-2016), author of guide books fascinated by Vercors region and long time mayor of Lans-en-Vercors. 

Upper opening


                         Upper and lower opening