Satellite images capture odd structures fenced within a remote mountaintop complex on the Greek island of Kefalonia. Experts investigate and discover a network of massive satellites linked to a hidden NATO doomsday communications bunker.
A royal coronation spot in Ireland; perfectly straight canals along the jagged Massachusetts coastline; a literal line in the Libyan sand; a Pennsylvania ghost town; ancient Tibetan salt pans.
Drone imaging captures oddly shaped industrial-sized towers mysteriously situated in a forest clearing near Moscow. Experts uncover a Soviet era military compound and the development of a catastrophic electromagnetic weapon.
Satellites capture a series of huge zigzag patterns in the remote Polish woodlands. Experts investigate a clandestine Nazi base linked to a doomed operation.