Vehicles are covered in ash near to Kirkjubaearklaustur, approx. 260 km from Reykjavik, Iceland, Monday, May 23, 2011. A dense cloud of ash from an Icelandic volcano was being blown toward Scotland ... more 
Vehicles are covered in ash near to Kirkjubaearklaustur, approx. 260 km from Reykjavik, Iceland, Monday, May 23, 2011. A dense cloud of ash from an Icelandic volcano was being blown toward Scotland Monday, forcing two airlines to cancel their flights, U.S. President Barack Obama to cut short his visit to Ireland and carriers across Europe to fear a repeat of the huge disruptions that stranded millions of passengers a year ago. (AP Photo / Brynjar Gauti) ( AP Photo/Brynjar Gauti ) less 
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Associated Press
Mon, May 23, 2011 4:06 PM EDT