All but two percent of Antarctica is covered in ice. In places, this ice is so thick that it conceals mountain ranges as vast as the Alps. During the long winter, the continent's size is doubled by frozen sea. Filmed with state-of-the-art technology over 14 months, often in temperatures of -60C, with Force 10 storms and tidal waves as an added bonus, this natural history of Antarctica comes from the coldest, wildest, most lonely, starkly beautiful, most inhospitable place on earth. Here Sir David Attenborough discovers penguins by the millions, thousands of whales, half the world's seal population and seabirds galore.