Yellowstone's Most Explosive Eruption: See the Evidence Up Close With a Geologist

Witness Ground Zero of the most explosive eruption at Yellowstone National Park as you venture high above Mammoth Hot Springs near Mt Everts with geology professor Shawn Willsey. Here, we investigate the spectacular contact between Cretaceous marine rocks and the huge accumulation of ash and pyroclastic material from the explosive eruption 2.1 million years ago. GPS location: 44.97485, -110.66425

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