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The lava dome of Mt. St. Helens on May 16, 1984, at which time it measured 850 meters wide and 220 meters high. |
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By courtesy of the U.S. Geological Survey; photograph, Lyn Topinka
Copyright 1994-1999 Encyclopedia Britannica |
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The lava dome of Mt. St. Helens on May 16, 1984, at which time it measured 850 meters wide and 220 meters high. |
|
|
By courtesy of the U.S. Geological Survey; photograph, Lyn Topinka
Copyright 1994-1999 Encyclopedia Britannica |
