Certainly the requirements of Tampu-tocco are met at Machu Picchu. The splendid natural defenses of the Grand Canyon of the Urubamba made it an ideal refuge for the descendants of the Amautas during the centuries of lawlessness and confusion which succeeded the barbarian invasions from the plains to the east and south. The scarcity of violent earthquakes and also its healthfulness, both marked characteristics of Tampu-tocco, are met at Machu Picchu. It is worth noting that the existence of Machu Picchu might easily have been concealed from the common people. At the time of the Spanish Conquest its location might have been known only to the Inca and his priests.
So, notwithstanding the belief of the historians, I feel it is reasonable to conclude that the first name of the ruins at Machu Picchu was Tampu-tocco. Here Pachacuti VI was buried; here was the capital of the little kingdom where during the centuries between the Amautas and the Incas there was kept alive the wisdom, skill, and best traditions of the ancient folk who had developed the civilization of Peru.
It is well to remember that the defenses of Cuzco were of little avail before the onslaught of the warlike invaders. The great organization of farmers and masons, so successful in its ability to perform mighty feats of engineering with primitive tools of wood, stone, and bronze, had crumbled away before the attacks of savage hordes who knew little of the arts of peace. The defeated leaders had to choose a region where they might live in safety from their fierce enemies. Furthermore, in the environs of Machu Picchu they found every variety of climate—valleys so low as to produce the precious coca, yucca, and plantain, the fruits and vegetables of the tropics; slopes high enough to be suitable for many varieties of maize, quinoa, and other cereals, as well as their favorite root crops, including both sweet and white potatoes, oca, anu, and ullucu. Here, within a few hours’ journey, they could find days warm enough to dry and cure the coca leaves; nights cold enough to freeze potatoes in the approved aboriginal fashion.