Natural Features & Ecosystems
In 1915, President Woodrow Wilson established Dinosaur National Monument to preserve "an extraordinary deposit of Dinosaurian and other gigantic reptilian remains of the [Jurassic] period, which are of great interest and value …" Twenty-three years later, President Franklin Roosevelt added more than 200,000 acres to the monument to protect the river corridors and adjacent viewsheds for the major canyons of the Green and Yampa rivers.
Did You Know?
Mormon crickets are wingless grasshoppers that swarm across roads through the summer in the western United States. These flightless insects can form such large swarms that the road appears to move and change colors where they cross.