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Mount Hood, the nearest major volcanic peak in Oregon, is 60 miles (100 km) southeast of Mount St. Helens. Mount St. Helens is geologically young compared with the other major Cascade volcanoes. It formed only within the past 40,000 years, and the summit cone present before its 1980 eruption began rising about 2,200 years ago. [ 11 ]
View the Mount St. Helens Fast Facts on CNN and learn more about the volcano in Washington.
The Mount St. Helens Visitor Center at Silver Lake, about 30 miles (48 km) west of Mount St. Helens and five miles (8 km) east of Interstate 5 (outside the monument), opened in 1987 by then-Vice President George H.W. Bush. The center was formerly operated by the U.S. Forest Service and has been operated by Washington State Parks since October 2007.
Then, on May 18, 1980, the dramatic eruption of Mount St. Helens shattered the quiet and brought the world's attention to the range. Geologists were also concerned that the St. Helens eruption was a sign that long-dormant Cascade volcanoes might become active once more, as in the period from 1800 to 1857 when a total of eight erupted.
TIL: The bodies of two women were discovered over a year after the eruption of Mount St. Helens, but they were both actually victims of murder prior to the eruption whose bodies were hidden to the ...
More than 400 earthquakes have been detected beneath Washington's Mount St. Helens in recent months, though there are no signs of an imminent eruption, according to the U.S. Geological Survey.
The short film Eruption of Mount St. Helens, 1980 (1981) is available for free viewing and download at the Internet Archive. The short film This place in time: The Mount St. Helens story (1984) is available for free viewing and download at the Internet Archive. Aerial pictures of the July 22nd, 1980 secondary eruption
Mount St. Helens, once the fifth-tallest peak in Washington State, lost about 1,300 feet from its height of 9,677, according to the USGS. The highest part of the crater rim on the southwestern ...