Yellowstone Caldera | Volcano type, Eruption, Size, Map, & Facts
https://www.britannica.com/place/Yellowstone-Caldera
WebMar 7, 2024 · Yellowstone Caldera, enormous crater in the western-central portion of Yellowstone National Park, northwestern Wyoming, that was formed by a cataclysmic volcanic eruption some 640,000 years ago. It measures approximately 30 by 45 miles (50 by 70 km), covering a large area of the park.
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