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Tourists pass an ice berg afloat in Lago Grey, a moraine lake at the base of the Grey glacier in Chile's Torres del Paine National Park. One of many tongues of the Southern Ice Field that straddles the Andes in Chile and Argentina, the Grey glacier is receeding at a rapid rate -- a kilometer per year by some estimates. The Southern Ice Field is the earth's third-largest ice mass.
Tourists pass an ice berg afloat in Lago Grey, a moraine lake at the base of the Grey glacier in Chile's Torres del Paine National Park. One of many tongues of the Southern Ice Field that straddles the Andes in Chile and Argentina, the Grey glacier is receeding at a rapid rate -- a kilometer per year by some estimates. The Southern Ice Field is the earth's third-largest ice mass.