With 351 arches reported up to date, department of Ardèche rank undeniably first about the largest concentration of natural arches in France (twenty-five percent of all french arches). It is followed distantly by department of
Aveyron and also by department of Drôme and Isère. See also for this departement the majestic
Pont d'Arc and
Pont Naturel du Rieussec.