National Geographic : 1913 Apr
Photo byHiram Bingham AN ANCIENT FORTRESS NEAR OLLANTAYTAMBO: URUBAMBA VALLEY The Urubamba Valley contains many remains of Inca architecture. This ancient fortress is on thewest side ofthe Urubamba River near Ollantaytambo, one of the most celebrated Inca towns in the Andes. It was first graphically describedinEnglish by the late E.G. Squier, in Chapter XXIV of his "Peru."