The area around the Bardarbunga volcano in Iceland has been evacuated over fears it could erupt.
Iceland's civil protection agency ordered the evacuation after "increased seismic activity" at the country's largest volcanic system.
A statement from the agency said: "This decision is a safety measure. It cannot be ruled out that the seismic activity in Bardarbunga could lead to a volcanic eruption."
Ash from the eruption of Iceland's Eyjafjallajokull volcano in 2010 shut down much of Europe's airspace for six days.