Fossil Butte National Monument
National Monument · Wyoming

Fossil Butte National Monument

Photo: Didier Descouens · CC BY-SA 4.0 · Wikimedia Commons

Fossil Butte protects the remains of an ancient lake whose layered rock holds beautifully preserved fish, plants, insects, turtles and even early horses. The visitor center displays hundreds of fossils, and trails such as the Historic Quarry Trail climb through sagebrush toward the butte. In summer, ask about ranger programs where you can watch or help with fossil work.

Good to know

Tickets
Free to visit, with no entry fee.
Time needed
2 to 3 hours for the visitor center and a short trail.
Best time
June to September. Visitor center hours are shorter in winter and snow can close trails.
Getting there
Kemmerer is about 20 minutes away. Rock Springs airport is about 1.5 hours by car; Salt Lake City International is about 2.5 hours.

Where to stay nearby

Gateway towns with hotels and food, close to the park entrances:
Kemmerer, Wyoming
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Fossil Butte National Monument questions

Can you dig for fossils at Fossil Butte?

Collecting is not allowed in the monument. Private quarries near Kemmerer let you dig fossil fish and keep what you find for a fee.

What fossils are at Fossil Butte?

Mostly fish from about 52 million years ago, plus stingrays, turtles, crocodiles, birds, bats, insects and plants.

How far is Fossil Butte from Yellowstone?

It is about 4 to 5 hours south of Yellowstone by car, so it is best as a stop on the way to or from the park.

Nearby national monuments