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Figure 24. The margin of the Quelccaya Ice Cap, Perú, photographed from the same camera position on the ground in 1977 and in 2002 and a sequence of four photographs showing the recession of the Qori Kalis outlet glacier, Quelccaya Ice Cap, Perú, in 1978, 2002, 2005, and 2008. Photographs by Lonnie G. Thompson, Byrd Polar Research Center, Ohio State University.