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A NASA image taken on the morning of 6 June 2011 shows a large ash plume emanating from Chile's Puyehue-Cordon Caulle volcano. Reaching an altitude of approximately 12,000 – 15,000 m (40,000 – 45,000 ft), the ash cloud drifted north along the Andes. A shift in the prevailing winds then caused the prominent kink visible in the plume. The last major eruption in the Cordon Caulle rift zone occurred in 1960.
Image courtesy of NASA.