Pinboard
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https://pinboard.in 10-07-2009 10:24:12
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Cascade Range volcanoes at normal background levels of activity this week: usgs.gov/programs/VHP/v…. May is #VolcanoAwarenessMonth , remember 2004-08? Spines of semi-solid lava emerged from a vent inside the crater of #MountStHelens to build a new lava dome 1500 ft (460 m) high.