Before vs. After Photos of the Mount St. Helens Eruption
5/18/2012 12:00:00 PM
Forest:
Credit: Pictures courtesy U.S. Forest Service
Caption: Douglas firs, Pacific silver firs, and mountain hemlock seemed to block the sky over old-growth forests around Spirit Lake, as seen in a picture taken in 1979 (left) by the U.S. Forest Service.
A year after the 1980 Mount St. Helens eruption, the same plot of land lies buried beneath large blocks of volcanic rock, or pumice, sent hurtling down the volcano by pyroclastic flows (right).
RELATED: Remembering the 1980 Mount St. Helens Eruption
Ridge, Before:
Credit: Photograph courtesy Harry Glicken, USGS
Caption: Mount St. Helens rises above the surrounding old-growth forests in a photograph taken from Johnston's Ridge, six miles (ten kilometers) northwest of the volcano, a day before the 1980 eruption.
Ridge, After:
Credit: Photograph courtesy Harry Glicken, USGS
Caption:Another photograph taken from Johnston's Ridge in September 1980 shows the largely barren landscape surrounding Mount St. Helens's crater.
Malone, the retired director of the University of Washington's Pacific Northwest Seismic Network, called the 1980 Mount St. Helens blast a "baptism by fire" for him and his colleagues.
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