I know I already posted this along with other satellite images of the Grímsvötn eruption. But it is just so cool by itself and tumblrs love animated gifs. Click on it to see in fullsize. People have been making remarks about the ash plume of this eruption, that it is quite unusual in shape and size. It has gone as high as 20km, which is very very high. And then at that altitude it still had the energy to spread out into a nuclear bomblike mushroom. For much more info about the eruption see the other Grímsvötn eruption posts.