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Ice team doctor Rob Lambert who will join the explorers taking part... News Photo 159031917Antarctica,Cape Town,Challenge,Crossing,Doctor,Exploration,Explorer,Finish,Horizontal,Ice,Journalist,Part Of,Polar Climate,Science and Technology,Scientific Exploration,South Africa,Taking,Talking,Team,WinterPhotographer ALEXANDER JOECollection: AFP 2013 AFPIce team doctor Rob Lambert, who will join the explorers taking part in an expedition to complete the last great polar challenge, crossing Antarctica in winter, speaks to journalists on January 6, 2013, in Cape Town. Explorers Sir Ranulph Fiennes and Anton Bowring are leading a team of explorers in this journey to cross Antarctica in the winter. Their attempt aims at raising 10 million US dollars for Seeing is Believing, an organization tackling avoidable blindness. The challenge will take six months - mostly in complete darkness - for more than 2,000 miles. In total, the team will spend an estimated 273 days on the ice, and once under way, travel at an average of 35km per day. AFP PHOTO / ALEXANDER JOE (Photo credit should read ALEXANDER JOE/AFP/Getty Images)