Early animation
The cave system — made up of more than 3.5 kilometres of underground passageways that have been occupied numerous times during human history — has been open to the public for some seven decades and became a museum in the 1990s.
The drawings were easy to miss. “When you shine a light straight on the engravings, they are really difficult to see, you have to play with light from different directions to see the depressions,” says Salas-Altès.
The etchings include images of animals such as a horse, a bear and an aurochs (the ancestor of domestic cattle), as well as myriad swirling lines. A handful of the engravings reveal how the artists used “natural lines or fissures in the walls”, says Salas-Altès. For example, “one is used to represent the ground under a horse”.