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Hear first hand accounts from the doomed Antarctic expedition which became a legendary story of survival. In 1914, polar explorer Sir Ernest Shackleton led an expedition to become the first to cross the Antarctic continent. But before they could land, their ship, SS Endurance, became trapped in pack ice and sank. Marooned on a floating ice field, Shackleton and his men, embarked on an epic odyssey to reach safety. Alex Last has been listening to BBC archive interviews with the survivors. Photo: Return of the sun over the 'Endurance' after the long winter darkness during the Imperial Trans-Antarctic Expedition, 1914-17, led by Ernest Shackleton. (Photo by Frank Hurley/Scott Polar Research Institute, University of Cambridge/Getty Images)