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

    Agate Fossil Beds

    National Monument Nebraska

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Fossils and Much, Much More

During the 1890s, scientists rediscovered what the Lakota Sioux already knew - bones preserved in one of the most complete Miocene mammal sites in the world.

Yet, this place called "Agate" is a landscape that reflects many players – 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.

Did You Know?

The narrow Niobrara River at Agate Fossil Beds, with the yellow flag (iris) in bloom.

The Niobrara River flows through Agate Fossil Beds. Except for 50-60 miles in Wyoming, this river is exclusively in Nebraska. The river seems quite small to visitors, who are surprised to find out that the Niobrara National Scenic River downstream near Valentine is broad and popular with canoers. More...