The Lascaux is a cave located in southern France. The cave is located near the town of Montignac, in the department of Dordogne. The caves are famous for the cave paintings contained inside them. The paintings in the caves are estimated to be about 17,300 years. The cave was discovered by an 18-year-old, named Marcel Ravidat, in 1940. Macel then went and got 3 other friends, named Jacques Marsal, Georges Agnel, and Simon Coencas; and they all entered the cave. The cave was opened to the public in 1948, and by 1955, because of all the visitors giving off carbon dioxide, the paintings inside the cave were getting damaged. The Lascaux was added to the UNESCO World Heritage Sites in 1979, along with other prehistoric sites in the Vezere Valley. French prehistory was divided in to 6 eras: the Palaeolithic, the Mesolithic, the Neolithic, the Copper Age, the Bronze Age, and the Iron Age.