The Pont-d’Arc Cavern is the largest decorated cave replica in the world. It features an extraordinary collection of paintings, drawings, and engravings reproduced from the original Chauvet Cave, closed to the public since its recovery in 1994. The construction of the replica began in October 2012 and it was opened to the public in 2015. The cavern covers 3000 square meters of floor surface. 150 kilometers of metal rods were welded to form grids imitating the shapes of the original cave. The replica is enveloped by 8000 square meters of geomorphically diverse walls. Based on 6000 images, sculptors were invited to model the wall surfaces with special mortars. To create the facsimiles of the original cave decorations, they worked with pigments and charcoal, the same materials as did their distant ancestor. The ambition was to create an environment that would resemble the original Chauvet Cave as closely as possible. This meant having the characteristics of the subterranean climate, including humidity and darkness.