What is the name of the Icelandic volcano which erupted in May 2011 causing disruption of flights around northern Europe?
GRIMSVOTN Grimsvotn Grimsvoetn Grímsvötn Grimsvotn volcano Grimsvötn Iceland eruption
grímsvötn iceland eruption grimsvotn volcano grimsvötn grimsvoetn grimsvotn
grimsvotn
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GRIMSVOTN