Dinosaur National Monument straddles the borders of Colorado and Utah along the banks of the Green and Yampa Rivers. The park covers 210,000 acres and is famous for the dinosaur fossils found there. The paleontologist Eric Douglass made the first discoveries here in 1909, and President Woodrow Wilson proclaimed it as a national monument in 1915.

However, the quarry site is only a small part of the park, which is dominated by canyonlands, river rapids, and a diverse collection of wildlife. The park land also was historically used by a number of Native American tribes; sites in the park have petroglyphs and other archeaological evidence of past inhabitants.