The volcanic events in Eyjafjallajökull started on March 20 2010 with a relatively small eruption on Fimmvörðuháls. The eruption came to a close April 12 but only a day later it entered a new phase, creating an enormous ash cloud that led to the closure of most of Europe’s IFR airspace for a few days – the highest level of air travel disruption since the Second World War. Thick layer of ash fell on some Icelandic farms and pastures, making it very difficult to continue farming or grazing livestock. Hundreds of farmers and their families in the worst affected areas had to be evacuated. By 21 May the eruption had died down. In earlier eruptions the volcano became dormant for a few weeks and then erupted again. There is at present nothing indicating a new eruption. Recent measurements of the quantity of ejected tephra indicate that 140 million cubic meters of tephra fell in Iceland alone.