Synopsis

If beings from other worlds have shaped human history, might traces of their presence lie concealed within the world's hidden tunnels and caverns? Could a cave in Ecuador hold metallic books etched with the secrets of alien technology? Was an ancient subterranean city in Turkey constructed with extraterrestrial assistance... or as a sanctuary from an alien assault? Persistent whispers speak of U.S. military collaboration with aliens within a clandestine base nestled inside a New Mexico mesa, Nat