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Major eruption in Yellowstone Park of Steamboat Geyser
Steamboat Geyser rarely has a major eruption, but one occurred Wednesday. It was the first major show from Steamboat since 2005. National Park Service

Major eruption in Yellowstone Park of Steamboat Geyser

Aug 1, 2013 - The Associated Press

BILLINGS, Mont. -- Old Faithful it's not.

Yellowstone National Park's Steamboat Geyser -- the world's tallest -- has erupted for the first time in more than eight years.

Park geologist Hank Heasler says Wednesday night's nine-minute blast sent steaming hot water an estimated 200 to 300 feet in the air.

Unlike Old Faithful, which spews water like clockwork about every hour-and-a-half, no one knows when Steamboat will erupt next.

In the past, it's gone as long as 50 years without a major event. Other years, it is quite accretive. In 1964, for example, it erupted a record 29 times.

Steamboat is one of more than 500 geysers at Yellowstone, which boasts the largest collection of hydrothermal features in the world.

They're fueled by cold water seeping into a natural underground plumbing network, where heat from the park's volcano causes the periodic eruptions.

Wednesday's eruption will be categorized as a major eruption, the first of that type since May 23, 2005.

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