in Grímsvötn, beneath Vatnajökull ice cap, 21st May 2011 at around 19:00 hrs. Tremors had began at 17:30. This eruption was powerful for the first
24 hrs. In the early hours of 22nd May the ash plume reached 15-19 km height. The eruption was over 25th May. This photo is taken 22nd May at 10:20, showing reduced visibility due to great quantities of ash in the air. It is assumed that as much ash
/about-imo/news/bigimg/2421