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Hank reveals the details about the giant volcano in Yellowstone National Park. Like Scishow on Facebook: www.facebook.com Follow SciShow on Twitter: www.twitter.com References for this episode can be found in the Google Document here: dft.ba tags: super volcano, supervolcano, yellowstone, volcano, yellowstone national park, scishow, science, geology, caldera, hydrothermal, magma, geyser, hot pot, fumerole, eruption, ash, yellowstone volcano observatory, erupt, wyoming, montana, old faithful, national park, toba, mt st helen's, ice age, geological record, earthquake, fault