History's Greatest Mysteries - Season 5 Episode 8 -
The Mystery of Machu Picchu
With 500-year-old secrets hidden in skeletons and stone, Machu Picchu is one of the most puzzling archaeological sites on earth. It's among the ancient world's most enduring riddles: Who built this astonishing complex, and why?
Please explain the problem in a few words.
Max 255 characters.
Max 255 characters.