The natural site of "Chaos de Montpellier-le-Vieux" has many named rock features as "The Sphinx", "The Elephant", "La Portede Mycenes", la Quille (The Skittle) or "L'Arc de Triomphe. But if you want visit La Double Arcade start early on the day and keep a eye behind each rock formation. The double arch is out of the maintened paths. Reference Arch Hunter Book FR71.