Ancient Aliens Season 18 Episode 2
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.
Serie: Ancient Aliens
Episode Title: Mystery of the Standing Stones
Air Date: 2022-01-14