Fossils and Much, Much More

During the 1890s, scientists rediscovered what the Lakota Sioux already knew—bones preserved in one of the world's most significant Miocene Epoch mammal sites.

Yet, this place called "Agate" is a landscape that reflects many influences—from early animals roaming the valleys and hills, to tribal nations calling the High Plains home, to explorers passing through or settling in the American West.

The Agate Fossil Beds with fluffy clouds.

Discover the Agate Fossil Hills

The Agate Fossil Hills has been a destination for paleontologists, explorers and National Park visitors.

The Dinohyus is featured in the visitor center diorama.

Visitor Center Diorama

Reconstructed skeletons of Miocene age mammals open doors in understanding the lives of these animals and the early 1900s excavations.

Red Cloud gave these signed, beaded moccasins to James Cook.

The James H. Cook Collection

These beaded moccasins and other items in the James H. Cook Gallery open doors of understanding the Native American culture.

Black and white photo of a gathering of American Indians and Cook at the Agate Springs ranch house.

The Agate Springs Ranch

Both paleontologists and American Indians such as Red Cloud of the Oglala Lakota, American Horse and others visited James Cook here.

Last updated: January 4, 2018

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301 River Road
Harrison, NE 69346


(308) 665-4113

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