Above the Roof of the World - The First Flight Over Mount Everest

In April 1933, two biplanes push beyond every known limit of human engineering to pass over the peak of Mount Everest — and for the first time in history, the world's highest mountain has something looking down on it. The photographs they bring back will change how we see the planet. Ninety years on, this is the story of the flight that conquered altitude itself.

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