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.

Starring:

William Henry, Robert Clotworthy, Andrew Collins, Nick Pope, Erich von Däniken, Linda Moulton Howe, Philip Coppens, David Childress, Mike Bara, Jonathan Young, George Noory, 8 more, Nick Redfern, Robert Schoch, Michael Dennin, Hugh Newman, Giorgio A. Tsoukalos, David Wilcock, Bill Birnes, Ariel Bar Tzadok

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