NASA
NASA

The eruptions of Mount Redoubt in Alaska caused a series of large lahars, or volcanic mudflows, streaming down the Drift River valley and into Cook Inlet. This NASA photograph, taken April 4, 2009 by NASA’s Earth Observing-1 satellite, shows the ash-filled lahar carving wide channels into the snowy banks of the Drift River and nearly engulfing the Drift River Oil Terminal.

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