Histoire de la Terre 43

This is the story of a 4.7 km route representing the 4.7 billion years of our planet's history. One kilometre corresponds to one billion years and, therefore, one metre (one large step) to one million years. Based on this symbolism, 21 panels have been placed along the route. The location of each panel, and therefore the corresponding period, recounts a major event that changed the course of Earth's evolution. This route, which follows the paths of Saint-Didier-en-Velay, is designed to be fun, historical and original.