Wyoming is a bit of a bizarre state, and only those who live here really know what that means. After all, our history was, and still is, a little bit wild. How many other places in the country can brag that the bullet holes above your barstool are from Buffalo Bill or Frank Canton? Even beyond our wild-west history, the geologic history of Wyoming – especially Heart Mountain near Cody, Wyoming – is unlike any place on Earth. I’m sure you’ve heard someone say they would “move mountains” for someone, but only in Wyoming has that phrase really come to life. The Heart Mountain landslide is a prime example.

Way out near Cody, Wyoming, there's a strange mountain that seems quite out of place.
Flickr / Tim Lumley
Rather than being a part of the Absaroka Range, Heart Mountain lies 62 miles to the east, in the Big Horn Basin.
Scientists have been able to confirm that Heart Mountain in Wyoming was once part of the range when it formed 50 million years ago - so what happened?
Flickr / Andrew G Hayes
Perhaps the other mountains just took Heart for granite, and the rock decided it would be better off alone?

Puns aside (no matter how much they rock), the story of Heart Mountain is almost unbelievable. Turns out, it moved those 62 miles away thanks to a volcanic landslide that took place over just about half an hour. Yes, that means the entire mountain was moving across the basin at 100 miles per hour.

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Wait - a mountain moved 62 miles in half an hour? How is the Heart Mountain landslide possible?
Flickr / Byron Cain
For years, scientists have wondered what really happened with Heart Mountain. The rocks found at the summit are about 500 million years old, but the rocks below only date about 50 million years old. How, then, did the older rocks come to rest above the relatively brand-new basin?

To answer that question, geophysicist Einat Aharonov at the Weizmann Institute of Science and Mark Anders, a geologist from Columbia University, set to work creating a computer model to interpret the data that was available. In simple terms, Heart Mountain in Wyoming was filled with unusual dikes that filled with water, leaving no room for the lava and regular volcanic eruptions that were forming the Absaroka Range. When the water pressure and lava pressure built up, the result was a catastrophic explosion and landslide that sent a mountain literally flying across the land.
You can see Heart Mountain in Wyoming all by itself in this satellite image from NASA.
Wikimedia Commons - NASA
Can you imagine it sliding all that way in just half an hour?
Those who visit today will find that there is one very dark twist to the Heart Mountain story.
Flickr / Kelly Michals
During World War II, the base of the mountain was used as an internment camp for Japanese Americans. The camp was a place where the American government kept those of Japanese heritage in terrible conditions, due to unfounded fears and mass public hysteria. Today, the site has been preserved as an interpretive center and a museum to demonstrate just how dangerous it can be to let propaganda, prejudice, and fear take over the public view. You can visit the Heart Mountain website to learn more about this dark period in American history. Visiting one of these camps is an experience that every American should have because it is truly powerful to see.

By now, you should know why Heart Mountain near Cody, Wyoming is called ”Heart” Mountain. And the Heart Mountain landslide may be a strange occurrence, but it’s not the weirdest thing to happen here! Read up on The 10 Weirdest And Strangest Things That Have Ever Happened In Wyoming for a glimpse into the odd history of the Equality State. And don’t forget to tell us your thoughts about Heart Mountain in Wyoming!

Here at OnlyInYourState, Yellowstone National Park is one of our favorite national parks in the country. Learn why in this short YouTube video (you’ll also learn about several more bucket-list-worthy national parks!). You’ll undoubtedly be inspired to visit Yellowstone after watching the video, but before you head out there, stock up on all the outdoor gear you need at REI.

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More to Explore

Heart Mountain

Elisa Regulski | July 31, 2022

Does Wyoming have any natural wonders?

Heart Mountain near Cody, Wyoming isn’t the only natural wonder in this incredible state. Some of the most incredible natural wonders in Wyoming are:

This spectacular destination is home to expansive canyons, shimmering rivers, and fascinating wildlife.

Whether you want to hike, fish, camp, or just enjoy the stunning sights, this place will capture your heart.

It’s the largest mineral hot spring in the world!

For more wonderful ideas, check out our full article about the best natural wonders in Wyoming. 

Which hikes in Wyoming are short and sweet?

You don’t have to carve out an entire day to go hiking. There are plenty of short and sweet hikes in Wyoming that will take you to some stellar places:

This three-mile pathway weaves through a verdant forest, and it’s perfect for a family outing.

This 3.2-mile out-and-back trail takes you to an awe-inspiring waterfall and jaw-dropping lookout spot. 

Can I hike to historical sites in Wyoming?

History buffs – rejoice! There are so many incredible historical sites in Wyoming:

This fort was a huge economic hub in the 19th century. The United States Army took over the area to protect travelers journeying along the Oregon, Mormon, and California Trails.

This spectacular historic hotel is full of old-time charm. Built in 1893, this lodging was once operated by Buffalo Bill Cody!

For more exciting travel ideas, check out our full article about the best historical landmarks in Wyoming.

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