Volcanic crater, apparently on the edge of the Bardarbunga glacier, within a fissure. The volcano at Bardarbunga has continued its slow slide into cataclysm as at least one (and now reportedly two) fissures have broken through the surface, releasing magma and at least some ash. These fissures are miles long, extending out from the caldera, where pressure has shot existing hollows in the earth full of magma as seismic activity has collapsed the Bardarbunga dome into its own caldera, pressurizing the magma there. Unfortunately for the people of Europe, the quakes and fissures of magma are still advancing on Atjka, a different volcanic caldera surrounded by rhyolite, which can explode violently when reheated by a new magmatic intrusion- for the time being, however, it is merely fissures that are releasing material.
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