The Orgnac Aven is a famous underground cave, located south of the limestone plateau of the Ardèche gorges, 10 km east of Barjac, near the Village of Orgnac l'Aven.
A major tourist site with nearly 5 km of galleries and 150,000 annual visitors, it obtained the Grand Site de France label during 2004 with three other sites: the Sainte Victoire mountain, the Pont du Gard and the Pointe du Raz.
This label has just been renewed for the 4th consecutive time, like that of Qualité Tourisme France.