Mapping Antarctica's rock underbelly
Scientists have produced the most detailed map yet of the White Continent's underbelly - its rock bed.
Called simply BEDMAP, this startling view of the landscape beneath the ice incorporates decades of survey data acquired by planes, satellites, ships and even people on dog-drawn sleds.
Dr Hamish Pritchard from the British Antarctic Survey described to our correspondent Jonathan Amos how the data was gathered.
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