Fossil Butte National Monument

In the ridges of southwest Wyoming are some of the best-preserved fossils in the world. They tell the story of ancient life in a warm, wet environment in and around a freshwater lake. Stingrays swam in the lake. Turtles basked in the sun. Leaves rustled in the breeze while early horses darted between the trunks. We reveal more of the past with each fossil found.

Fish fossils, Knightia eocaena, exposed near cliff

About Fossil Butte National Monument

In the ridges of southwest Wyoming are some of the best-preserved fossils in the world. They tell the story of ancient life in a warm, wet environment in and around a freshwater lake. Stingrays swam in the lake. Turtles basked in the sun. Leaves rustled in the breeze while early horses darted between the trunks. We reveal more of the past with each fossil found.

Quick Facts

Location: WY
Designation: National Monument

Operating Hours

Visitors may enter the park any day sunrise to sunset, but visitor services and motor vehicle access vary throughout the year. Camping is not available.

Wednesday: Sunrise to Sunset
Monday: Sunrise to Sunset
Thursday: Sunrise to Sunset
Sunday: Sunrise to Sunset
Tuesday: Sunrise to Sunset
Friday: Sunrise to Sunset
Saturday: Sunrise to Sunset

Activities

Hiking Junior Ranger Program Wildlife Watching Birdwatching Museum Exhibits Shopping Bookstore and Park Store

Guided Tours & Experiences

Discover Fossil Butte National Monument with expert-led tours

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Essential Park Gear

Recommended equipment for your visit

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