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View from space showing Mount St Helens Volcano 1992. Mount St. Helens, active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. Mount St. Hel...
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View from space showing Mount St Helens Volcano 19...

A small phreatic eruption occurred at Mount St. Helens in the spring of 1980, prior to the catastrophic eruption on May 18, 1980. The phreatic event released steam and volcanic gases.
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A small phreatic eruption occurred at Mount St. He...

Eruption of the volcano Mount St Helens, which became the epicenter of an earthquake measuring 5.1 on the Richter scale, May 18, 1980. Image courtesy CDC.
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Eruption of the volcano Mount St Helens, which bec...

For more than nine hours a vigorous plume of ash erupted, eventually reaching 12 to 15 miles (20-25 kilometers) above sea level. The plume moved eastward at an average speed of 60 miles per hour (95 k...
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For more than nine hours a vigorous plume of ash e...

Mount St. Helens erupted often between 1980 and 1986. An explosive eruption on March 19, 1982, sent pumice and ash 9 miles (14 kilometers) into the air, and resulted in a lahar (the dark deposit on th...
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Mount St. Helens erupted often between 1980 and 19...

July 22, 1980 eruption of Mount St. Helens, with Mount Rainier, Washington, in the background. July 22, 1980.
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July 22, 1980 eruption of Mount St. Helens, with M...

Eruption of Mt St Helens 18 May 1980, Gifford Pinchot National Forest An optimised / enhanced version of a USDA Forest Service photo. Credit USDA
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Eruption of Mt St Helens 18 May 1980, Gifford Pinc...

Mt. St. Helen's Smoking Caldera 1980, Washington
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Mt. St. Helen's Smoking Caldera 1980, Washington

Giant plumes of volcanic ash pour from Mount St. Helens on the day of its major eruption, May 18, 1980.
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Giant plumes of volcanic ash pour from Mount St. H...

An aerial view of Mount St. Helens from the north, captured on February 25, 2005. The volcano is a prominent geological feature, known for its eruption in 1980 and ongoing volcanic activity.
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An aerial view of Mount St. Helens from the north,...

View from Johnston Ridge six miles northwest of Mount St. Helens volcanic one day before eruption May 17, 1980 in Washington State. The volcano suffered a catastrophic eruption on May 18, 1980.
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View from Johnston Ridge six miles northwest of Mo...

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Ash covered street in Eastern Washington State after the 1980 volcanic eruption of Mount St. Helens
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Ash covered street in Eastern Washington State aft...

satellite photo of Mount St. Helens volcano taken after the eruption of 1980 in Washington State, USA
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satellite photo of Mount St. Helens volcano taken ...

1980 - Mount St. Helens soon after the May 18, 1980 eruption, as viewed from Johnston's Ridge.
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1980 - Mount St. Helens soon after the May 18, 198...

This photo was taken on July 15, 1980 which shows the after-effects of the Mount St. Helens eruption. Here we see mudflow almost to the top of the mailbox posts near Cowlitz River in Cowlitz County, W...
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This photo was taken on July 15, 1980 which shows ...

An iconic aerial view of the eruption of Mount St. Helens. Skamania County, Washington. May 18, 1980.
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An iconic aerial view of the eruption of Mount St....

Pre-1980 Eruption of Mount St. Helens
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Pre-1980 Eruption of Mount St. Helens

Mount St Helen's volcanic eruption
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Mount St Helen's volcanic eruption

volcanic eruption occurred at Mount St. Helens
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volcanic eruption occurred at Mount St. Helens

volcanic eruption occurred at Mount St. Helens
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volcanic eruption occurred at Mount St. Helens