In this image taken from amateur video, smoke from the Grimsvotn volcano, Iceland is seen from a plane Saturday, May 21, 2011. Iceland's most active volcano has started erupting, scientists said ... more 
In this image taken from amateur video, smoke from the Grimsvotn volcano, Iceland is seen from a plane Saturday, May 21, 2011. Iceland's most active volcano has started erupting, scientists said Saturday, just over a year after another eruption on the North Atlantic island shut down European air traffic for days, but the impact of this volcanic eruption is not yet known. less 
1 / 1
Associated Press | Photo By Amateur video via APTN
Sat, May 21, 2011 6:34 PM EDT