This is the sequel to the other volume, "Agharta." This volume contains a condensation of the rare books "A Journey to the Earth's Interior" by M. B. Gardner and "The Smoky God" by G. Emerson.

This book examines historical accounts and photographs of UFOs seen over the skies of the USA up to the 1960s. The author has examined a large amount of information and compared accounts with scientific explanations of the same events.

The first in-depth, authoritative look at the flying saucer phenomenon and still considered to be one of the best ever written. Extremely well researched work with facts that were documented. A retired Marine Corps Major, Keyhoe came to the conclusion that UFOs originate from outer space and the U.S. military was engaged in a cover-up.