During the 2002 eruption, swaths of lava up to ... a large elongated fissure or fracture (as seen on the diagram above) or a tiny ground crack. Nyiragongo is notorious for releasing large amounts ...

STOCKHOLM (Reuters) - A small new fissure eruption in an ice-free area of Iceland's Bardarbunga volcano system prompted authorities to raise their warning of the risk of ash to aviation to the ...