We've arrived out our final story in the frozen saga of the Heroic Age of Antarctic exploration - we've talked about our subject before, many times; he participated in more expeditions than anyone else, and led three himself! An open-ocean voyage of 800 miles, across the worst seas in the world, with almost no shelter and the lives of dozens of men depending on you. Imagine that pressure! No small surprise that the saying goes "Give me Scott for science, Amundsen for speed, but when all has gone to hell you'd better get down on your knees, and pray for Shackleton".

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