It is one of the greatest mysteries of the prehistoric world: why did people on nearly every continent erect giant standing stones? According to Ancient Astronaut Theorists, the placement of these monoliths and their geological makeup could point to extraterrestrial intervention--and. quite possibly, a technology that once existed on Earth far more advanced than our own.
Genres: Documentary , Mystery , Sci-Fi & Fantasy
Keywords: ancient-aliens-theory , megalith , paranormal-investigation , petroglyph , ufo-conspiracy , latest-episodes , watch-full-episodes-online