What is the sleeping monster that was discovered 400 miles below Yellowstone Park?
This giant is the “supervolcano” that lies beneath Yellowstone National Park, the wildlife and forest preserve positioned on a sprawling expanse that extends through the states of Wyoming, Idaho, and Montana.
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More liquid magma lurks beneath the Yellowstone supervolcano than scientists once thought. But don't panic: That amount of magma, researchers say, is still nowhere near enough to portend an eruption any time soon.
Yellowstone is one of the world's largest active volcanic systems. Its history began 16.5 million years ago when present-day southeast Oregon sat over a hotspot—a massive plume of hot material upwelling from deep in the earth's mantle.
Yellowstone's greatest geological threat isn't a supervolcano. It's a magnitude-7 earthquake. YELLOWSTONE NATIONAL PARK, Wyo. – While concerns about a potential eruption of the supervolcano beneath this iconic park may garner the most alarming headlines, a more likely hazard in the coming decades is a large earthquake.
If another large, caldera-forming eruption were to occur at Yellowstone, its effects would be worldwide. Such a giant eruption would have regional effects such as falling ash and short-term (years to decades) changes to global climate.
The Yellowstone supervolcano last erupted about 640,000 years ago. A sleeping giant is nestled in the western part of the United States. Though it stirs occasionally, it has not risen from slumber in nearly 70,000 years.
Drownings have resulted in five known deaths in the park. Looking at all national parks, the survey indicated that falls were by far the most common way to die, accounting for a total of 245 deaths.
Always stay at least 100 yards (91 m) away from bears and wolves, and at least 25 yards (23 m) away from all other animals, including bison and elk. Hot springs have injured or killed more people in Yellowstone than any other natural feature. Keep your children close and don't let them run.
Not in any significant way. Large, distant earthquakes can cause changes to geysers and hot springs within Yellowstone because shaking fractures the fragile subsurface hot water plumbing systems. However, significant tectonic stresses are not transmitted very far.