Agate Fossil Beds National Monument in Nebraska, USA - map and visitor information

Agate Fossil Beds National Monument in northwestern Nebraska combines Miocene mammal fossils with the James H. Cook Collection of Native American gifts and artifacts. Start at the museum, then choose between two trails through the Niobrara River landscape. This is a remote day trip, so bring food, water, and enough fuel.

Highlights

• See fossil exhibits and a diorama that explain the area’s ancient mammals.
• Explore the Cook Collection and its connection to Lakota and Cheyenne leaders.
• Choose the Daemonelix burrow-fossil trail or the longer Fossil Hills route.

Know before you go

Fees, hours, and seasonal access

Safety information

Watch where you put your hands and feet around prairie rattlesnake habitat, and check people and pets for ticks. Carry water and sun protection. Summer thunderstorms can develop over exposed trails; seek indoor shelter when thunder is audible. Prepare your vehicle and supplies for winter conditions, and do not depend on cell reception.

Visit responsibly

Leave fossils, rocks, and archaeological objects in place. Dogs may use both trails on a leash no longer than six feet, but are not allowed inside the visitor center except as service animals. Pick up waste and do not leave pets unattended.

Reservations and permits

Ordinary visits are reservation-free. Contact NPS about activities that need special permission using its permit guidance. Do not plan an ordinary overnight camping stay inside the monument; camping without a permit is prohibited.

Maps, location, and access

The visitor center is at 301 River Road, Harrison, NE 69346. The paved approach uses Nebraska Highway 29: turn east onto River Road 22 miles south of Harrison or 34 miles north of Mitchell, then continue about three miles. Follow official driving directions; the eastern approach from Marsland includes a long unpaved section and is not an equivalent paved shortcut. There is no public transit to or within the monument.

Nearby parks

• Fort Robinson State Park is a road-trip option near Crawford at Soldier Creek Road and US 20. It has separate state entry requirements; check renovation notices if using the lodge.
• Scotts Bluff National Monument is three miles west of Gering, with its visitor center on Old Oregon Trail. It can fit a route through the Scottsbluff–Gering area.

Things to do

• Daemonelix Trail: This roughly one-mile gravel route includes a steep section and steps, with protected displays of ancient burrows.
• Fossil Hills Trail: Allow for about three miles round trip on a gradually sloping paved route to historic dig areas. Pavement does not eliminate exposure to sun and weather.
• Museum visit: Combine fossil displays, the Cook Collection, and the 12-minute film for the site’s natural and cultural context.

Facilities and accessibility

The visitor center offers restrooms, exhibits, a bookstore, and public Wi-Fi. A picnic area is nearby, while groceries, fuel, and restaurants are at least 30 miles away. NPS describes powered entrance doors, reserved parking, film captions, assistive listening, and large-print materials. Consult accessibility services and request an ASL interpreter about two weeks ahead when possible.

About the national monument

History

Much of the protected land formed part of the Cook family’s Agate Springs Ranch. Scientific study of the corkscrew-shaped burrows began in 1892, and major bonebed work followed in the early 1900s. Congress authorized the monument in 1965; formal establishment followed in 1997. These are separate milestones.

Wildlife and habitat

The fossils represent ancient mammals, while the present-day prairie and river support living wildlife. NPS identifies deer, pronghorn, rabbits, snakes, and migratory birds among the area’s animals. Watch wildlife from a distance and avoid approaching animals.

Contact

Call 308-665-4113 for access, trail conditions, or visitor services. The visitor center address is 301 River Road, Harrison, NE 69346.