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North America > United States of America > Rocky Mountains (United States of America) > Wyoming > Southwest Wyoming > Fossil Butte National Monument

Fossil Butte National Monument

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Fossil Butte National Monument is a United States National Monument in Southwest Wyoming.



Fossil Butte National Monument is a unique paleontological site, where ecosystems of the 50-million-year-old Green River Formation of the ancient subtropical lake bed were unusually well preserved. The fossils include fish, alligators, bats, turtles, dog-sized horses, insects, and many other species of plants and animals.

Get in[edit]

The visitor center can be reached along U.S. Highway 30 about 15 miles west of Kemmerer.

Fees and permits[edit]

There is no fee to enter the monument. Donations are welcome.

Get around[edit]


  • Visitor Center. May-September: daily 9AM-5:30PM; Oct-Nov 29: daily 8AM-4:30PM; Nov 30-Mar 7: Tu-Sa 8AM-4:30PM, closed holidays; Mar 8-Apr: daily 8AM-4:30PM. There are over 300 fossils on display, two video programs and fossil preparation demonstrations.


  • Fossil research quary. If you hike to Fossil research quary in summer Friday or Saturday between 11AM and 4PM, you'll have a chance to witness fossil excavation.
  • Hike the 2½-mile Historic Quarry Trail or the 1½-mile Nature Trail
  • Have a snack in the picnic area





Stay safe[edit]

Go next[edit]

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