Iceland's most active volcano, Grimsvotn, located at the heart of its biggest glacier Vatnajoekull, started to spew smoke and lava late on Saturday

Iceland's most active volcano, Grimsvotn, located at the heart of its biggest glacier Vatnajoekull, started to spew smoke and lava late on Saturday.

• Iceland's most active volcano, Grimsvotn, located at the heart of its biggest glacier Vatnajoekull, started to spew smoke and lava late on Saturday.

The ash plume, which was more than twice the height of last year’ eruption of EYJAFJOELL, led to the establishment of “no fly zone” of 220 km (120 mi) in all directions around the summit, leaving planes grounded and closing airspace across Iceland.

• The ash plume, which was more than twice the height of last year’ eruption of EYJAFJOELL, led to the establishment of “no fly zone” of 220 km (120 mi) in all directions around the summit, leaving planes grounded and closing airspace across Iceland.

In 2010, EYJAFJOELL’s vertical ash plume, which, unlike Grimsvotn’s, was comprised of very fine silica ash, shut down large portions of European airspace for almost a month, and forced 600 people to evacuate from their homes.

• In 2010, EYJAFJOELL’s vertical ash plume, which, unlike Grimsvotn’s, was comprised of very fine silica ash, shut down large portions of European airspace for almost a month, and forced 600 people to evacuate from their homes.