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John Leivers, 59, of Amazonas Explorer, a Cusco outfitter company, having departed the town of Cachora, heading to Choquequirao, points out the elevation inscription of the nearby peak. On a 100 year anniversary of Machu Picchu's first publication in the National Geographic, a 10 day expedition sets out to trace the explorer Hiram Bingham's path to Inca's most sacred city.