Animals at Chicken Creek

There is no resident fish population in the monument. Occasionally, when Chicken Creek flows, one or two species may briefly enter the monument from downstream sources.

In 2003, the National Park Service and Wyoming Game and Fish Department conducted ...

Millet Canyon

In a wet year, standing and flowing water covers no more than 1-2% (percentage only a rough estimate). Three valleys (Millet Canyon, Murder Hill Canyon, and Moosebones Canyon) and the headwater area of Chicken Creek immediately downstream of Spring ...

Main Body (Wasatch Formation)

This unit of the Wasatch Formation is that part of the formation which produces the

spectacular red-colored badlands in Fossil Butte National Monument. Particularly typical exposures can be seen in the south facing scarp of Fossil Butte where the ...

Wasatch Formation

The sediments that make up the Wasatch Formation in the Fossil Basin were deposited mainly by streams flowing into the basin from the surrounding uplands. Rock types are variable and for the most part individual types cannot be traced ...

Green River Formation (Historic Quarry)

Three ancient great lakes existed in the region of Wyoming, Utah, and Colorado 50 million years ago: Lake Gosiute, Lake Uinta, and Fossil Lake, the smallest. All are gone today, but they left behind a wealth of fossils in ...

Adams National Historical Park

Adams National Historical Park was the home of two American presidents and subsequent generations of their descendants from 1720 to 1927. The family's experience represented, shaped, and mirrored significant events in the social, cultural, political, and intellectual history of the ...

Peregrine Falcons at Echo Park

Peregrine falcons are a medium-sized bird of prey, roughly the size of a crow. Although males and females are identical in appearance, the female can be a third larger than the male. These previously-endangered birds nest on high, remote cliff ...

Split Mountain Campground Area

Dinosaur National Monument is one of the darkest places remaining in the United States. Because there is little light pollution here, you can see the stars of our Milky Way galaxy with startling clarity. Night skies are a vanishing resource ...

Echo Park

Echo Park is located in the heart of Dinosaur's canyon country. Here, the Yampa River flows into the Green River, which winds around the massive feature known as Steamboat Rock. The meeting of the two rivers along with nearby ...

Josie Bassett Morris Ranch

Wild and dangerous, romantic and adventurous, the American West is for most people today an almost mythological world, one separated from ours by time, technology, and civilization. Yet, for Josie Bassett Morris, the Wild West was a stark reality. Josie ...