The Grimsvotn volcano erupted Saturday in Reykjavik, Iceland. This is Iceland's most active volcano and it has forced the closure of the main international airport and all domestic flights have been cancelled. Last year, ash clouds from another Icelandic volcano, Eyjafjallajokul led to the closure of a large section of European airspace, with repercussions for flights from the U.S. Matthew Roberts from the Iceland Meteorological Office has been monitoring the erupting volcano.

A massive cloud of ashes has kept thousands of fligfhts on the ground in Northern Europe yesterday after a volcano in Iceland erupted a second time this month, spewing huge amounts of silicate ash into a busy airspace for travellers in the region. Some of Europe's busiest airports have closed down in what appears to be the biggest shutdown of flights since 9/11.