On July 24, 1911, Yale University lecturer and amateur archaeologist Hiram Bingham completed a steep climb from Peru’s Urubamba River valley through the thin air of the Andes Mountains to one of the most significant and lasting discoveries in archeological history–the Inca ruins of Machu Picchu. Perched about 2,400 meters above sea level and 80 kilometers from the onetime Inca capital of Cusco , the “Lost City of the Incas” remained undiscovered by the Spanish throughout their conquest of Peru in the 1500s
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Centennial Anniversary: Bingham Rediscovers the Lost Inca City of Machu Picchu [Slide Show]