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Every 73 minutes an immense column of superheated water and steam blasts from deep beneath Earth's surface and showers over the exposed, barren soil of Yellowstone National Park. This is Old Faithful--the most famous geyser in the world. Not all geysers are so predictable, however. 'Geysers: When Earth Roars' takes you on a journey to the geyser fields of Russia, Iceland, New Zealand, the United States, and deep beneath the ocean. Discover how geysers form and continue to erupt day after day, month after month, year after year.
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