High in the cloud forests of Peru is
the mountaintop fortress of a lost civilization and an ancient legend of
murder. The Chachapoya, or Cloud Warriors who lived over 400 years ago,
vanished virtually overnight.
For years, anthropologists have been hunting for who or what killed
these people. Now, the discovery of a site with more than 80 corpses
could solve this mystery. National Geographic joins a team of
archaeologists and anthropologists who believe the answer is hidden in
the bones–testing theories from an Inca massacre or an epidemic brought
by the Spaniards to a ritual sacrifice or assassination by a rival tribe
to finally close the case on this lost capital's ultimate collapse.