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. Read More
A variety of fossil fishes, insects, plants, reptiles, birds and mammals from Eocene Fossil Lake are displayed in the visitor center museum.
Summer is a good time to visit. Days are sunny and not too hot, nights are cool. Lodging, camping and restaurants are available nearby.
Experience the geology, wildlife, scenery, and wide open spaces of Fossil Butte by hiking the trails, dirt roads or taking the scenic drive.
As you plan your visit, be sure to check out the current conditions at Fossil Butte National Monument.
We offer a variety of ranger programs during in the summer months including fossil preparation demonstrations and drop in programs.
Explore our photo galleries and videos highlighting fossils from the Green River Formation.
Join us on a virtual field trip. Explore 52-million-year-old Fossil Lake from anywhere in the world.
Teachers, have fun with these hands-on curriculum materials about Fossil Butte fossils designed for your classroom.
A list of research papers relating to Fossil Lake.
Last updated: April 29, 2025
