Is there a clandestine world of tunnels and bases underground? Who is living in them? What do they want with humanity? "Great read rivals Cussler and Riely...Thank you." - reader comment left on author's site. This is "Moonbase" the 4th book in the series (with cliff-hanger endings from book 1 to 4 (first storyline), and then from book 5 to 7, (2nd storyline), so read these other books first: -Greyland: D.U.M.B.s (Deep Underground Military Bases) - Book 1 http: //www.amazon.com/dp/B00FK2A8AA-Oceandeep: D.U.M.B.s (Deep Underground Military Bases) - Book 2 http: //www.amazon.com/dp/B00HLWCK3A-Rescueplan: D.U.M.B.s (Deep Underground Military Bases) - Book 3 http: //www.amazon.com/dp/B00MQ99D2OThen: -Wormwood: D.U.M.B.s (Deep Underground Military Bases) - Book 5 http: //www.amazon.com/dp/B01E2HD03K -Destroyer: D.U.M.B.s (Deep Underground Military Bases) - Book 6 http: //www.amazon.com/dp/B077DB2MLY-Purifier: D.U.M.B.s (Deep Underground Military Bases) - Book 7 https: //www.amazon.com/dp/B08R1B6Y8WA prequel story (that is stand-alone) about the early military career of General Simpson ("The General") is mostly written, so check back for that in mid 2021, likely in June/July. Leon Verdat thought he knew all about building underground tunnels. His civilian contracting business was doing well and his family thriving. Then a Man in Black forced him into the shadow world of black budgets, military underground bases, and the secret war with the Grey aliens.He has been left with no choice but to help a black ops military group battle invading Grey aliens from their top secret D.U.M.B.s (Deep Underground Military Bases) under the Earth, undersea--and now off-planet, as he's about to experience.With the Greys determined to take over Earth and the lives of everyone he cares about hanging by a thread, Leon knows he has to keep fighting, no matter the cost. It might mean losing his family to save the world but he must go on.The need to stop the Greys and finally end this war are even more urgent...before it's too late.A sci-fi thriller from David Sloma The inspiration behind this book series? Many late nights listening to Coast to Coast AM, since the early days of Art Bell, where he'd have many guests on that talked about aliens and underground secret bases (mostly in the southwest USA desert, like Area 51, but also bases all over the world), like Whitley Strieber, Richard Dolan, Roger Lear, Richard Sauder, and more.Guests spoke about real life bases and also told some fictional stories. Some spoke about both.These books take a sampling of the facts that have been made public about D.U.M.B.s and adds some imaginative speculation to create a brand new, wild fictional ride!