Eruption of Mt. St. Helens on May 18,
1980. Image from CVO/USGS web site
http://vulcan.wr.usgs.gov/Volcanoes/MSH/SlideSet/ljt_slideset.html
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Cracks in the runway and "sand volcanoes"
caused by soil liquefaction at the King County Airport following the Nisqually
earthquake on February 28, 2001
http://www.metrokc.gov/kcdot/news/photos/2002/airport_runwaylg.jpg
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