Throughout the world, there are areas where strange activity, UFOs, bizarre orbs of light, and electromagnetic anomalies are regularly witnessed. Many of these sites correspond to locations where ancient civilizations chose to build and rebuild their most sacred architecture. Ancient Astronaut theorists propose these sites are remnants of a lost extraterrestrial electrical system--one erected to draw energy from the Earth, to fuel spaceships, and possibly even to open gateways into other worlds.

Tens of thousands of individuals go missing every year and many are never found. But this is not a new phenomenon. Throughout history, ships and planes have mysteriously vanished mid-journey--and entire civilizations, communities, and tribes have seemingly disappeared from the face of the Earth without a trace. Might there be a connection between all these missing person cases--one possibly involving otherworldly portals and even extraterrestrial beings?