Stock Photo - Ash fall from Grimsvotn Volcanic Eruption in the Vatnajokull Glacier, Iceland Using GPS while driving into the ash cloud Driving into the ash cloud on Route 1, the road, sky and landscape are filled with volcanic ash blocking out the sun May 21, 2011 eruption began spewing tons of ash, initially the plume was over 20 kilometers high Grimsvotn is a subglacial basalt volcano prior eruption was 2004

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