Greyland: D.U.M.B.s (Deep Underground Military Bases) - Book 1

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Is there a clandestine world of tunnels and bases underground? Who is living in them? What do they want with humanity?

Leon Verdat thought he knew everything about building underground structures. His contracting business was very profitable and his family was thriving. It only took one visit from a mysterious Man in Black to change his life forever.

He was "asked" to come work for a secret military uni...