The team investigates the world's oldest and most incredible relics up close; Giorgio Tsoukalos takes a look back at the most mysterious artifacts from all over the globe, those he believes provide undeniable proof of extraterrestrial contact.
Genres: Documentary , Mystery , Sci-Fi & Fantasy
Keywords: ancient-aliens-theory , megalith , paranormal-investigation , petroglyph , ufo-conspiracy , latest-episodes , watch-full-episodes-online