Dinosaur Hill may no longer be an active dinosaur dig site but it has yielded important finds. In 1901, Elmer S. Riggs, Assistant Curator of Paleontology at the Field Museum in Chicago, unearthed roughly 2/3 of an Apatosaurus, the 70-foot plant-eating dinosaur once referred to as the Brontosaurus, at this spot between Fruita and Colorado National Monument. The 1-mile, self-guided interpretive trail offers insight to the area’s paleontological and geological importance and includes a stop at the site excavated by Riggs.