How would they keep the secret of Machu Picchu? It’s hard to understand from our knowledge of Greek, Egyptian and other early civilizations with written records how such a magnificent site (Machu Picchu) could not have been discovered by the Spanish. Yet until its discovery in the 1911, Machu Picchu, “the lost city of the Incas”, remained forgotten for 400 years. http://ping.fm/HZ28V