The East Antarctic ice sheet, the largest in the world, lies seemingly frozen in time. Discovery of a rugged landscape buried beneath the thick ice provides evidence of a more dynamic past. See Letter p.72
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Passchier, S. Ancient Antarctic fjords. Nature 474, 46–47 (2011). https://doi.org/10.1038/474046a
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DOI: https://doi.org/10.1038/474046a