National Monument · NE
Agate Fossil Beds National Monument is open.
Last checked Wed, 14 Oct 2026 13:00:58 GMT
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.
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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.
Read more on Wikipedia ↗ Text from Wikipedia, CC BY-SA.
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We derive Agate Fossil Beds National Monument's status from the National Park Service's own alerts and operating hours, refreshed hourly — this is our reading, not an official determination. As of the last check: No active closures or hazards reported. Full method: how we check park status.