In June 2019, Etienne Davodeau undertook an 500-mile backpacking journey through France from the Pech Merle cave in southwestern France to the town of Bure near the German border. From cave paintings to nuclear waste, this journey through time and space explores what humans leave behind for generations to come. Davodeau wants readers to understand what separates and connects these two places and dates. His hunch? It probably says a lot about our human relationship to this planet and its soil…