This is an explosive, eye-opening sequel to the author's best-selling Underground Bases and Tunnels. He lays out the amazing evidence and government paper trail for the construction of huge, manned bases offshore, in mid-ocean, and deep beneath the sea floor. Bases big enough to secretly dock submarines! Official United States Navy documents, and other hard evidence, raise many questions about what really lies 20,000 leagues beneath the sea. Many UFOs have been seen coming and going from the world's oceans, seas and lakes, implying the existence of secret underwater bases. Hold onto your hats: Jules Verne may not have been so far from the truth, after all! Dr Sauder also adds to his incredible database of underground bases onshore. New, breakthrough material reveals the existence of additional clandestine underground facilities as well as the surprising location of one of the CIA's own underground bases. Plus, new information on tunnelling and cutting-edge, high speed rail magnetic-levitation (MagLev) technology. This book carefully examines the evidence and comes to a thought-provoking conclusion.