AP PROVIDES ACCESS TO THIS PUBLICLY DISTRIBUTED HANDOUT PHOTO PROVIDED BY NASA.
This satellite image provided by NASA and acquired Sunday May 22, 2011 shows a plume of dense ash from the Grimsvotn volcano in Iceland towards the upper center of the frame. The plume from the volcano was bearing down on Scotland and set to disrupt flights there as early as Monday night, May 23, 2011, Britain's Met Office said. (AP Photo/NASA)