Originally aired on the National Geographic Channel.
Release date: May. 8, 2012.
Audience
Rating: Not rated.
Summary
In six classic programs, National Geographic explores great secrets of the past.
Contents
Nasca lines: the buried secrets -- Nefertiti and the lost dynasty -- Tunnel to a lost world -- Inca mummies: secrets of a lost world -- Lost kingdom of the Maya -- Lost cities of the Amazon.