• The Agate Fossil Hills where mammal fossils were excavated in the early 1900's

    Agate Fossil Beds

    National Monument Nebraska

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  • Park phone lines intermittently out of service

    If you cannot reach the park by phone, please click the Contact Us link on the left side of this page to email a ranger. Staff will call or email back during business hours.

Operating Hours & Seasons

Visitor Center and Museum
Ranger taking the flag down.

A park ranger lowers the flag as the visitor's center closes for the day.

Summer Hours
Daily from Memorial Day until Labor Day - 9:00 a.m. to 5:00 p.m.

Winter Hours
Daily from Labor Day until Memorial Day - 8:00 a.m. to 4:00 p.m.

Visitor Center Closings
Thanksgiving Day, Christmas Day, and New Year's Day
The monument's two trails--the Daemonelix and the Fossil Hills Trails--are open year-round from dawn to dusk.

Did You Know?

James Cook raised horses as well as cattle on the Agate Springs Ranch.

Grasses that make up the mixed grass prairie are excellent for grazing cattle. However, with the low annual rainfall the carrying capacity is 25 acres for one cow and calf. This makes it necessary for ranches in this area to be fairly large. More...