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

    Agate Fossil Beds

    National Monument Nebraska

The Cook Collection


Did You Know?

Eastern Cottontail Rabbits are plentiful around the visitor center and on the rocky hills.

The Niobrara River flowing through the park is the reason that Agate Fossil Beds is home to many different animals. Both prairie animals and river animals live here. Early settlers lived in the valley as well due to water accessibility, and many original homesteads are the sites of current ranches. More...