Lascaux, France, is the setting of a complex of caves famous for its Paleolithic cave paintings.
The cave contains nearly 2,000 paintings of animals, humans, and abstract signs.
These paintings are estimated to be 17,300 years old.
The caves were discovered by four teenagers in 1940.
Some anthropologists theorize that the paintings could be an account of successful hunts, or could represent a mystical ritual to improve future hunting.
New research suggests that the paintings may incorporate prehistoric star charts.
An alternative hypothesis is that the paintings are spiritual in nature, relating to visions experienced during ritualistic trance-dancing.