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　　Everest is the eternal subject of mountain films (and Mountainfilm). Here, an expedition joined by National Geographic Photographer Renan Ozturk — who narrates in first person — summits in an effort to solve an outstanding Everest mystery: Who achieved the first summit? Was it really George Mallory? Or his partner Sandy Irvine, who disappeared with Mallory in 1924 on the descen... (展开全部)