evidence: Pollution is threatening some of the world’s oldest rock carvings [...] Dating back tens of thousands of years, this cluster of one million images on the Burrup Peninsula is like an artistic encyclopedia, depicting human and environmental evolution. Carved into rocks are images of changing landscapes, tribal customs, and now-extinct species such as the Tasmanian tiger and fat-tailed kangaroo. These petroglyphs also reveal the mythology of one of the world’s oldest civilizations, Aboriginal Australians. [...] "The rock art tells the stories of evolution and are a biblical archive of our sacred ancient history," Cooper says. "They carry and hold a deep connection to Mother Earth."