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| Above, one of Yellowstone's many hot springs. Photo by Armand Vaquer. |
Yellowstone National Park sits atop a huge super volcano, which is still active. If it weren't for this super volcano, the geysers, hot springs and other features would not be thrilling visitors today.
Wyoming Public Media has an article on what lies below the surface at Yellowstone National Park.
They begin with:
Yellowstone National Park is famous for its hydrothermal activity. Geysers like Old Faithful and Steamboat have delighted tourists and fascinated scientists for years. But a lot is still unknown about the hydrothermal features that make the park so unique.
Much of the landscape of the park was formed by hydrothermal explosions. These are similar to geysers except that in addition to water and steam, they also spew out pulverized rock and mud from the area, creating large craters that are usually filled with lakes and surrounded by raised rims. This explosion of material leaves an unmistakable fingerprint that researchers can look at to learn more about the events that left it.
To read more, go here.
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