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Fossil Butte National Monument

Some of the world's best preserved fossils are found in the flat-topped ridges of southwestern Wyoming's cold sagebrush desert. Fossilized fish, insects, plants, reptiles, birds, and mammals are exceptional for their abundance, variety, and detail of preservation.  Most remarkable is the story they tell of ancient life in a sub-tropical landscape. 
 
weekend quarry program

Things to do

There are many activities at Fossil Butte National Monument, whether you explore the park on your own or with a ranger.
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visitor center

Things to know before you come

Summer is the best time to visit. Days are usually sunny and not too hot; nights are cool. No lodging, restaurants, or camping are available in the monument.
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fossil preparation activity

For kids

Hey, kids! There's lots of fun stuff to do at Fossil Butte National Monument. You can make a fossil rubbing, clean a fossil, visit a fossil quarry, hike with a ranger, and become a Junior Ranger.
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fossil bird head

Fossil Photo Gallery

Photographs are windows into the past. Check out the incredible fossils from the Green River Formation! more...
 

Write to

Fossil Butte National Monument
P.O. Box 592
Kemmerer, Wyoming 83101

Phone

Visitor Center and Headquarters
(307) 877-4455

Fax

(307) 877-4457

Climate

Today's climate is semiarid with low relative humidity, lots of sunshine, and considerable wind. Snow falls November through May.
Communities Surrounding Fossil Butte National Monument
Note: The times listed below are approximate driving times to the park.
Kemmerer, WY (21 min. ) Pop. 2,651
Diamondville, WY (22 min. ) Pop. 716
Frontier, WY (24 min. )
Opal, WY (37 min. ) Pop. 102
Randolph, UT (40 min. ) Pop. 483
Cokeville, WY (43 min. ) Pop. 506
Laketown, UT (46 min. ) Pop. 188
Woodruff, UT (53 min. ) Pop. 194
Garden City, UT (56 min. ) Pop. 357