National Monument · Harrison, NE
Agate Fossil Beds National Monument
In the early 1900s, paleontologists unearthed the Age of Mammals when they found full skeletons of extinct Miocene mammals in the hills of Nebraska -- species previously only known through fragments. At the same time, an age of friendship began between rancher James Cook and Chief Red Cloud of the Lakota. These two unprecedented events are preserved and protected here... at Agate Fossil Beds.

Plan a real visit
Your visit briefing.
Details can change. Use this field note to orient yourself, then confirm time-sensitive information with the source.
Address & directions
Weekly hours
Hours vary
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Access & amenities
Accessibility and amenity details have not been published here. Check the source or contact the venue before visiting.
What to look for
- National Monument
- Managed by the National Park Service
- Arts and Culture
- Cultural Demonstrations
Published perspectives
Visitor notes, with provenance.
Normalized reviews with a published record appear here.
Why it matters
Go with a question.
Places like this are more than coordinates. They are where ideas become decisions, where communities keep memory, and where the words in a textbook become a room you can stand inside.
Information is presented for discovery and planning. Confirm visit details with the official source before you go.
