See fossils in the outcroppings on this 83-acre preserve, where interpretive trails and a visitor center tell the story of the 460-million-year old Chazy Fossil Reef, a world-renowned geological treasure that underlies much of the bedrock of southern Isle La Motte. It was formed by hard-shelled marine organisms and reef dwellers, such as gastropods and cephalopods. Take the "Walk Through Time Trail," where 80 colorful panels depict the history of life on Earth. Each foot represents one million years. See more fossils at the smaller, 20-acre Fisk Quarry Preserve nearby.