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Umberto Nobile has never stopped looking for his friends and during a journey in Italy Lara finds the diary of the Italian aereonautical engineer. She reads that Nobile found the proof that his friends aren't dead. The airship Italia with the survivors was forced to land in a lost city founded by Vikings. Nobile writes that he will leave for the purpose of looking for his friends but he was old and tired and has never returned. Lara also finds in the diary a map and decides to leave....