Your Guide to Agate Fossil Beds National Monument
During the 1890s, scientists rediscovered what the Lakota Sioux already knew—bones preserved in one of the world's most significant Miocene Epoch mammal sites.
Yet, this place called "Agate" is a landscape that reflects many influences—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.
If traveling east or west on U.S. Highway 20 go 22 miles south of Harrison, NE on State Hwy 29 then 3 miles east on River Road (paved) If traveling east or west on U.S. Highway 26 go 34 miles north of Mitchell, NE on State Hwy 29 then 3 miles east on River Road (paved). Also accessible from State Hwy 71, 25 miles on unpaved River Road.
GPS: lat:42.42170419, long:-103.753886
Physical address: 301 River Road, Harrison, NE, 69346
There is no fee for the visitor center or trails at Agate Fossil Beds National Monument.
Summers can be very warm, high 90's to 100 with the possibility of thunderstorms late afternoons.
Winter temperatures can dip as low as -20 with some snow and wind.
Heaviest snows can be expected in late Spring.
Hours for Trails
The park's two trails are open from dawn till dusk every day. Visitor Center features Miocene Mammal fossils, a 12 minute movie, and the James H. Cook Collection, a unique collection of American Indian artifacts that were gifts to James Cook and his family. View closures: https://www.nps.gov/agfo/planyourvisit/hours.htm
Sunday: Sunrise to Sunset
Monday: Sunrise to Sunset
Tuesday: Sunrise to Sunset
Wednesday: Sunrise to Sunset
Thursday: Sunrise to Sunset
Friday: Sunrise to Sunset
Saturday: Sunrise to Sunset
Hours for Visitor Center
Sunday: 8:00AM - 4:00PM
Monday: 8:00AM - 4:00PM
Tuesday: 8:00AM - 4:00PM
Wednesday: 8:00AM - 4:00PM
Thursday: 8:00AM - 4:00PM
Friday: 8:00AM - 4:00PM
Saturday: 8:00AM - 4:00PM