Dinosaur National Monument covers roughly 325 square miles in Utah and Colorado, and is accessed in Utah on Hwy 149, which links up with I-40 at Jensen. The area boasts the largest concentrations of fossilized dinosaur bones in the entire world. Visitors can see more than 1,600 bones and other exhibits in the visitor center near Jenson. Some of the area's natural features include deep, narrow gorges with pastel-tinted sandstone cliffs along the Yampa and Green River
. Open all year long unless closed by weather conditions. Open From September To June 8a.m. to 4p.m. Camping, fishing and hiking are available within the park; several easy and established hiking trails begin at park campgrounds.
One- to five-day river trips through the monument can be arranged through private companies throughout the summer season.