Did you know that the horse evolved in North America?

The Hagerman Horse, Equus Simplicidens, Idaho’s state fossil, was the first true horse. It was about the size of a modern Arabian horse. However, its bones most closely resembled those of the Grevy’s zebra.

Hagerman is home to over two hundred different species of fossil plants and animals. The list includes Sabertooth Cat, a Hyena-like dog, Peccary, Mastodon, Otter, Bear, Shrew, Camel, and Ground Sloth, as well as many other species. With over 3,000 new fossil fragments found each year, it is one of the most fossiliferous Pliocene-aged sites in the world.

The monument also includes a portion of the Oregon Trail. Information related to the entire Oregon Trail as well as the Idaho portion is available in the Visitor Center.

Interpretive programs include Hagerman Fossil Beds NM and Paleontologist Junior Ranger programs, paleo porch programs, Junior Paleo Camp, and Oregon Trail living history programs.

Come explore our Visitor Center with the Discovery Center, fossil displays, introductory DVD and learn more about our fascinating fossil park and the Oregon Trail!

Trip Itineraries

The Ultimate Waterfalls Guide

Chasing waterfalls? The ultimate waterfall guide of Southern Idaho will give you directions, advice, and other facts about epic waterfall adventures!

Explore the Secrets of Black Magic Canyon

The smooth rock walls of Black Magic Canyon, carved by the Big Wood River thousands of years ago, provide an Arizona slot canyon aesthetic. In the summer, the water carves through the lava rocks, hiding it as if it didn't exist. But in the fall and winter - there is epic exploring to be done!

Top 10 Spring Break Destinations

Explore Southern Idaho's 10 best Spring Break locations! Who needs the beach when you have snow covered mountains and waterfalls to see?

Brewery Hopping in Southern Idaho

Taste amazing beers throughout Southern Idaho. Start in Buhl, Idaho at Magic Valley, and make your way to Twin Falls for three more brew pubs! Koto, Milner's Gate, and Von Schiedt!

Blaze Your Own Trail This Winter

Snowmobiling is one of winter’s great joys, and Southern Idaho calls you to blaze your own trail.

Ice Climbing: A Winter Pastime For the Very Brave´╗┐

She offers physical challenges for anyone willing to seek them — but saves her most daredevil opportunities for winter.

Frozen Waterfalls and Ice Climbing

Chasing waterfalls has taken on a whole new meaning in Southern Idaho. Discover frozen waterfalls this winter season!

Snowshoe the City of Rocks for Epic Views

Ready to cross snow shoeing off your bucket list? The City of Rocks National Reserve is the place to do ...

Discover Winter Wonders at Pomerelle Mountain Resort

Looking for perfect and always dependable snow? Pomerelle Mountain Resort is one of Idaho's best. Located 25 miles off Interstate 84, the rates are extremely affordable and the views are of a perfect winter wonderland.

10 Ways to Wake Up Your Winter

She’s calling you. Maybe you’ve heard her beckon toward towering rocks, pristine lands, powerful waters, and ancient caves that have ...