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In National Geographic: Yukon Passage, four men attempt to retrace the 1,800-mile journey across the Yukon Passage, which lies between Northwest Canada and Alaska and was originally taken up by 10,000 people in 1898. The men travel on foot, ski, log raft, and dog sled to reach their ultimate goal. The difficulty of their trek is emphasized: in one sequence, the men must cut down 20 trees in order to construct a sturdy log raft. There is also discussion of the famous Yukon gold rush. Actor Jimmy Stewart narrates in his usual touching and compelling manner.