Not only did Eyjafjallajökull produce a wonderfully televisual plume. Its timing was also impeccable. If the Icelandic volcano had erupted today, it would have caused far less fuss.
Eyjafjallajökull's genius was to ground Europe's aircraft just as families were returning from their Easter holidays. While parents fretted about getting their children home, schools battled to reopen with so many teachers trapped abroad.
There are still questions over how extensive the airspace shutdown needed to be and how much compensation airlines should pay for nature's acts. But we should also examine the consequences of schools having holidays at the same time.