Nestled in the heart of the Vicdessos valley in the Ariège department, the Grotte de Niaux is an ornate cave dating from the Upper Palaeolithic. This site is part of the network of ornate caves of the Pyrenean-Cantabrian chain. It contains numerous Magdalenian parietal figures that include most of the species that were specific to the prehistoric fauna of the Pyrenees chain. The cavity of the Grotte de Niaux extends within limestone dating from the Jurassic and Eocretaceous ages and was listed as a Historical Monument in July 1911. Today, its first 2,625 feet (800 m) are accessible to visits for limited groups.