Skip to main content
Recreation AreaRecreation.gov

Agate Fossil Beds National Monument

Harrison, Nebraska · Sioux County

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 unp…

Advertisement
42.42170, -103.75389
Open in OpenStreetMap

About 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.

How to Get There

From US 20: 22 miles south of Harrison, NE on State Hwy 29, then three miles east on River Road (paved) From US 26: 34 miles north of Mitchell, NE on State Hwy 29, then three miles east on River Road (paved). From State Hwy 71: 25 miles west on the unpaved portion of River Road.

Driving directions (Google Maps) →

Plan Your Visit to Agate Fossil Beds National Monument

Heading to Agate Fossil Beds National Monument? A few things to know before you go:

  • Reservations: popular sites fill up fast — check Recreation.gov 6 months in advance
  • Fees: day-use and camping fees vary; check current rates on the official park page
  • Trash & pack-out: follow Leave No Trace principles
  • Wildlife: store food in bear boxes where provided; never feed wildlife
  • Weather: the 5-day forecast above is updated every 6 hours; verify just before you go

Frequently Asked Questions

Do I need a reservation for Agate Fossil Beds National Monument?

No central reservation system listed for Agate Fossil Beds National Monument. Check the official page (https://www.recreation.gov/recarea/2556) for the latest entry policy and availability.

How do I get to Agate Fossil Beds National Monument?

From US 20: 22 miles south of Harrison, NE on State Hwy 29, then three miles east on River Road (paved) From US 26: 34 miles north of Mitchell, NE on State Hwy 29, then three miles east on River Road (paved). From State Hwy 71: 25 miles west on the unpaved portion of River Road.

How do I contact Agate Fossil Beds National Monument?

You can reach the park at phone: (308) 665-4113 or email: agfo_ranger_activities@nps.gov.