• Camarasus skull in the cliff face, rafters on the Green River, McKee Springs petroglyphs


    National Monument CO,UT

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  • Portion of Echo Park Closed Due to Mountain Lion Activity

    The closed area includes the group campsite (other campsites remain open), river access area, the adjacent restroom, water spigot and the path following the Green River upstream to its confluence with the Yampa River. A fresh animal kill is in the area.

Press Kit

Entrance to Lodore Canyon
Gates of Lodore
NPS Photo

Dinosaur National Monument was established on October 4, 1915, as an 80-acre monument to preserve the outstanding fossil resources at the dinosaur quarry north of Jensen, Utah. In 1938 the monument was enlarged to 203,885 acres. This proclamation vastly expanded the land base to include the river corridors and adjacent viewsheds for the major canyons of the Green and Yampa Rivers. On September 8, 1960 minor revisions to the boundary enlarged the monument to 211,141.69 acres, for the construction of entrance roads and administrative sites.

Dinosaur Significance
Visitor Statistics
Quarry Visitor Center Background

Did You Know?

A Fremont granary in a remote alcove in the monument.

Dinosaur National Monument contains a record of human history dating back at least 10,000 years.