• 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?

This painting hangs in the Den exhibit in the Cook Gallery.

Red Cloud, a chief of the Oglala Lakota Sioux, was one of the most photographed American Indians. More than 128 photos were taken of him during his lifetime. An oil painting of Red Cloud painted at the Agate Springs Ranch hangs in the “Den” exhibit in the James H. Cook Gallery. More...