MOUNT St Helens' volcano dome was caught swelling in size considerably, growing by 1,640ft , a shocking US Geological Survey timelapse reveals.
Thursday 28 February 2019
Mount St Helens: Watch volcano dome SWELL and mountain rise by 500M
MOUNT St Helens' volcano dome was caught swelling in size considerably, growing by 1,640ft , a shocking US Geological Survey timelapse reveals.
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