How to reach : From the central square in the little village of "Le Caylar" (wood carving trunk), drive road D9 southeast toward "Ganges" for 1km and turn right at sign "Camp Rouch". Drive 200 meters and proceed straight ahead 1.5km to the four crossroad. Go straight and drive this little road 3.4km to the pavement end (old farm of Camp Rouch). Park under the big tree. Hike a short distance west on a old 4WD road past the side of the farm and continue onto the old long distance footpath GR 71 (now displaced) with red and white parallel marks. Follow the footpath 500 meters or so to a rocky and sandy clearing. The arch is visible from there east on the top of a rocky ridge.