Deep Underground Military Bases (DUMBs) lore.
allegedunderground_baseBlack-Project Lore
Conspiracy of vast secret underground (alien/NWO) bases; real kernel is Cheyenne Mountain/acknowledged classified Corps facilities (Richard Sauder).
The DUMB conspiracy posits city-sized secret underground complexes serving as command bunkers, alien labs, and New World Order nodes. Richard Sauder's 'Underground Bases and Tunnels' (1995) is foundational; its real kernel is genuine -- the NORAD Cheyenne Mountain complex and Lloyd Duscha's 1987 Army Corps speech acknowledging classified facilities. Sauder extends this with documents toward unevidenced offshore/sub-seafloor and CIA bases and a 'breakaway civilization' nuclear-survival thesis, but explicitly declined to assert aliens exist. Real military bunkers anchor an otherwise speculative, alien-laden mythology.