In Russia, the modern flying saucer era began in 1908, as villagers from a sparsely populated area of central Siberia, near the Tunguska River, witnessed a large glowing object streak across the sky and explode in midair with the force of an atomic blast equal to over 40 megatons, completely destroying miles of forest. Light from the blast was witnessed from thousands of miles away. Secrecy since the days of Stalin and the former Soviet Union have kept the truth about this event hidden until now. Hear from one of the last living eyewitnesses of this event as well as the experts, including a former KGB officer who describes the cover-up surrounding this event, and how metallic evidence of an alien spacecraft gathered by the soviet military from the site was discovered and then disappeared in secrecy. Includes the shocking facts behind this amazing story along with a fascinating series of photos, film footage and spellbinding interviews with researchers and the best known, most credible Tunguska authorities in the world today. Packed with expert analyses, in-depth commentary and unforgettable conclusions about this amazing mystery.