• 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

Ranger taking the flag down.

Ranger taking flag down for the day.

Visitor Center and Museum

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 trails are open year-round from dawn until dusk.

Did You Know?

Dinohyus skull in diorama

One of the more menacing beasts found in the quarries at Agate Fossil Beds was the Dinohyus. This big-toothed animal was a scavenger credited with tearing apart the rhino skeletons that ended up in the waterhole bonebed. Although not related to the pig family, his nickname was “Terrible Pig.” More...