http://gallery.usg
s.gov/videos/628Th
e rapid onset of
unrest at Mount
St. Helens on
September 23, 2004
initiated an
uninterrupted
lava-dome-building
er
(more)
http://gallery.usgs.gov/videos... rapid onset of unrest at Mount St. Helens on September 23, 2004 initiated an uninterrupted lava-dome-building eruption ...
