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

    Agate Fossil Beds

    National Monument Nebraska

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Plan Your Visit

Map of Agate Fossil Beds National Monument
Agate Fossil Beds National Monument is located in the Northwest corner of Nebraska.  Just 17 miles from the Wyoming border to the west and 42 miles from the South Dakota border to the north.  The county is Sioux and Harrison is the only town and the county seat, some consider the area sparsely populated as there are only 1500 people.  Much of the area is used for ranching and the carrying capacity is at least 25 acres for a cow/calf pair.

Did You Know?

small Stenomylus camel

A very small camel, the Stenomylus camel, was found near the Agate Fossil Hills. This camel was about two feet tall at maturity. Although the quarry is not accessible, displays about this fragile-looking animal are available in the visitor center. More...