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When Peruvian locals led Hiram Bingham to Machu Picchu in 1911, it was a discovery which would make the Yale professor famous, highly respected and richer.
But Bingham's claim to be the first to discover Peru's lost city of the Incas is looking more than a little doubtful. Detailed investigations by a US historian have revealed that Machu Picchu was, in fact, discovered over 40 years earlier by a German businessman.