Lines and shapes etched into the surface of Antarctica's Robinson Glacier hint at the slow but inevitable movements of this giant river of ice. Patterns of lines may be icefalls, where a glacier cascades over rock, or a series of crevasses, massive cracks that form as different parts of a glacier move at slightly different speeds. Robinson Glacier flows down to the continent's coast, where glacial ice meets mammoth slabs of sea ice caught in the frigid embrace of the Southern Ocean.

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Landsat 7
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ROBINSON-GLACIER
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ROBINSON-GLACIER