What Makes Yellowstone National Park's Geysers Erupt?10:55
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Tourists watch the "Old Faithful" geyser, which erupts on average every 90 minutes, at Yellowstone National Park in Wyoming on June 1, 2011. (Mark Ralston/AFP/Getty Images)
Tourists watch the "Old Faithful" geyser, which erupts on average every 90 minutes, at Yellowstone National Park in Wyoming on June 1, 2011. (Mark Ralston/AFP/Getty Images)
This article is more than 2 years old.

Memorial Day weekend kicks off the summer travel season, and visitors will flock to Yellowstone National Park to see the geysers.

The park has more geysers than any other place on Earth. Here & Now's Jeremy Hobson tours the geyser basin with Bob Smith, chief seismologist at the Yellowstone Volcano Observatory, and park ranger Rebecca Roland.

This segment aired on May 26, 2017.

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