Fossil Butte National Monument

National Monument · Wyoming

Information See 1 current alert

A dark brown, football-shaped fossil fish with a fan-shaped tail and spines standing up on its back.
Photo: NPS Photo

Current alerts (1)

  • Information

    Temporary 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.

Hours

Fossil Butte National Monument

Every daySunrise to Sunset

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.

Visitor centers

Fossil Butte Visitor Center Today: 8:00AM - 4:30PM

Fossil Butte Visitor Center

Today: 8:00AM - 4:30PM (Visitor Center Fall Hours, Sep 8 – Oct 31)

Usual hours

Every day8:00AM - 5:30PM

Coming up:

  • Nov 1 – Apr 30: Visitor Center Winter Hours
  • Nov 11: Veteran's Day (closed)
  • Nov 26: Thanksgiving Day (closed)

SUMMER HOURS: Friday of Memorial Day Weekend - Labor Day: daily 8:00 am - 5:30 pm

FALL HOURS: Tuesday after Labor Day - Oct. 31: daily 8:00 am - 4:30 pm

WINTER HOURS: Nov. 1 - April 30: daily 8:00 am - 4:30 pm (Closed Sundays)

SPRING HOURS: May 1 - Thursday before Memorial Day: daily 8:00 am - 4:30 pm

CLOSED Veteran's Day, Thanksgiving, Christmas, New Year's, Martin Luther King Jr., and President's Day

Visitor center page on nps.gov

About this park

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.