The first summit expedition to Eyjafjallajokull volcano, Iceland after the March eruption was made by John Seach in April 2010. While on the summit John observed two active vents inside the main crater. The southern vent was showing almost continuous Strombolian activity, and the northern vent showed phreatomagmatic eruptions. Intensified activity occurred under the Gigjokull Glacier on 1st May.
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