This fascinating story about alien influences on ancient humans is packed with nearly 200 photographs to supplement the commentary. For example, the ancient city of Nan Madol, on the island of Pohnpei in Micronesia, contains huge basalt ruins. No one is certain how these ruins were built or why. This volume explores various legends and investigates the statues on Easter Island, the markings at Palpa and the Nazca lines in Peru, and underwater rock drawings, among other subjects, and poses the question, did cosmic gods come to Earth thousands of years ago to influence ancient humans and their cultures?