During the Ice Age, at least 10% of the highlands of the Central Massif of France was covered in snow year ’round, which is why the rock art in the Chauvet Pont D’ Arc Cave, at the edge of the Massif in southeastern France, depicts such a wide variety of animals, from musk oxen to hyaenas, wooly mammoths to horses, by cooler summers and warmer winters under nearly constant cloud-cover.
