Fossil Butte National Monument

Fossil Butte National Monument
Image credit: picture by RuggyBearLA licenced under Attribution License.

Fossil Butte National Monument is located in Wyoming, United States, approximately 15 miles west of Kemmerer. It encompasses an area of 8,198 acres and was established in 1972 to preserve and showcase the remarkably well-preserved fossilized fish and other organisms that lived in the region during the Eocene epoch, about 52 million years ago.

This national monument holds great historical and scientific significance, as it offers a unique window into the past, allowing visitors to explore and learn about the ancient world. The fossilized remains found here are considered to be one of the richest and most diverse collections from this time period. Over 300 species of fish have been discovered, along with other fossilized organisms such as reptiles, birds, insects, and plants.

Visitors to Fossil Butte National Monument can enjoy a variety of activities and attractions offered in the area. The visitor center provides informative exhibits, displays, and multimedia presentations that provide a fantastic introduction to the geological and paleontological wonders found within the monument. One of the highlights is a reconstructed ancient lake environment, complete with life-sized models of the prehistoric organisms that once inhabited this area.

For those seeking a more immersive experience, the monument offers guided tours, both on foot and by vehicle, led by knowledgeable rangers. These tours provide in-depth information about the fossils and the geological history of the region. Additionally, visitors have the opportunity to participate in fossil demonstrations, observing and learning about the excavation and preparation processes.

Nearby attractions to Fossil Butte National Monument include the American Fossil Quarry, where visitors can dig for their own fossils under the guidance of experienced staff. Another interesting site is the historic town of Kemmerer, which offers a glimpse into the area’s mining and ranching history, as well as museums, shops, and restaurants.

Overall, Fossil Butte National Monument is a remarkable destination for history enthusiasts, paleontology lovers, and anyone interested in the wonders of ancient ecosystems. The fascinating fossils and educational resources create an engaging and enlightening experience for visitors of all ages.

Location

Fossil Butte National Monument is nestled within the southwestern corner of the state of Wyoming, United States. Situated in Lincoln County, the monument is positioned approximately 15 miles west of the city of Kemmerer. Embraced by the scenic backdrop of the Rocky Mountains, this geological marvel is located within the vast Green River Basin. Fossil Butte itself, which serves as the centerpiece of the monument, stands as a splendid testimony to the prehistoric past, featuring rich fossil deposits that have captivated paleontologists and visitors alike. Surrounding the monument, visitors can find sprawling grasslands, forested mountains, and picturesque rivers, forming a breathtaking natural landscape that complements the unique fossil-filled heritage of the area.

Address & Contact

864 Chicken Creek Road
Kemmerer, WY 83101
Driving Directions
Phone: 3078774455
Web: Link

Weather & Seasonality

The best time to visit Fossil Butte National Monument would be during May, June, July, or August. These months offer pleasant weather for outdoor activities with average maximum temperatures ranging from 62°F to 84°F. Additionally, visitor numbers increase gradually during this period, reaching a peak in August. This timeframe allows for enjoyable experiences without encountering large crowds.

Things to do and learn in Fossil Butte National Monument

Activities

Some of the activities you can do in Fossil Butte National Monument are: Junior Ranger Program Wildlife Watching Birdwatching Museum Exhibits Shopping Bookstore and Park Store Hiking

Topics

Learn about these topics at Fossil Butte National Monument: Geology Fossils and Paleontology Schools and Education

Amenities

Visitor Centers

Fossil Butte Visitor Center

Over 2000 fossils are on exhibit. Video programs feature what scientists have learned from the fossils and the rocks they're found in, and how fossils are excavated and prepared. Visitor Center hours vary by the season.

Passport Stamp locations

The following locations have passport stamps for your "Passport to Your National Parks" booklet: Fossil Butte Visitor Center.

Campsites within or near Fossil Butte National Monument

This park doesn't have any campsites within its boundaries (or we haven't found them yet)).

Hotels within or near Fossil Butte National Monument

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Super 8 by Wyndham Diamondville Kemmerer

With a stay at Super 8 by Wyndham Diamondville Kemmerer in Diamondville, you'll be within a 5-minute drive of Archie Neil Park and Fossil Country Frontier Museum. Featured amenities include express check-out and a 24-hour front desk. Free self parking is available onsite.
Address: 3 US Hwy 30 - 189, Diamondville, Wyoming 83116
Web: Link

Best Western Plus Fossil Country Inn & Suites

Located in Kemmerer, Best Western Plus Fossil Country Inn & Suites is within a 5-minute drive of Archie Neil Park and Fossil Country Frontier Museum. Featured amenities include a business center, express check-in, and express check-out. Free self parking is available onsite.
Address: 760 Highway 189/30, Kemmerer, Wyoming 83101
Web: Link

Antler Motel

With a stay at Antler Motel in Kemmerer, you'll be within a 15-minute walk of Archie Neil Park and Fossil Country Frontier Museum. The front desk is staffed during limited hours. Free self parking is available onsite.
Address: 419 Coral St, Kemmerer, Wyoming 83101
Web: Link

News and Alerts

Date issued Details
2026-01-22Temporary Phone Number for Visitor Center
Our main phone number for the visitor center is temporarily disconnected. Please call 307-877-4456 to reach a ranger.
2026-01-09Winter Seasonal Road Closure
The Scenic Drive past the visitor center is closed to vehicles for the winter season. When free of snow, the Scenic Drive is available for pedestrian use, including walking and biking. After it is snow-covered, skiing, snowshoeing, and walking are allowed. The visitor center is accessible and open 8:00 am-4:30 pm Monday through Saturday and closed seasonally on Sundays and federal holidays.