Harpers Corner Road is closed from the first significant snowfall some time in December to approximately Easter.
Most dirt roads in the park are clay based and impassable when wet, even with four-wheel drive vehicles including the roads to Echo Park, the Yampa Bench Road, and Island Park Road. These roads are not maintained in the winter and can be impassable due to snow.
Did You Know?
A population of peregrine falcons has been established at Dinosaur National Monument. The park's rugged canyons make ideal habitat for the once endangered raptor. Fossils show that dinosaurs evolved into birds--and so still live in modified form at Dinosaur.