A cloud of ash billowing from Puyehue volcano near Osorno in southern Chile, 870 km south of Santiago, on June 5, 2011. Puyehue volcano erupted for the first time in half a century on June 4, 2011, prompting evacuations as it sent up a cloud of ash that circled the globe.
Lightning bolts strike around the Puyehue-Cordon Caulle volcanic chain near southern Osorno city, on June 5, 2011.
Tungurahua Volcano throws incandescent rocks and lava into the sky, seen from the nearby town of Runtun, Ecuador, on December 4, 2011.
Houses and trees are covered by volcanic ash on the bank of Nahuel Huapi Lake in Villa La Angostura in southern Argentina, on June 19, 2011, after the nearby eruption of the Puyehue-Cordon Caulle volcanic chain.
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