What are Deep Underground Military Bases (D.U.M.B.S.)?

"There's 132 under the United States, an average of 5.36 to 7.24 cubic miles in size at an average of 1.5 to 4.5 miles underground, built, by and large, most of them in areas away from geotectonic areas"
https://www.projectcamelot.org/underground_bases.html

"According to researchers, Deep Underground Military Bases or DUMBS are secret bases used for Unacknowledged Special Access Programs and nefarious Deep State activities.

Legend has it, that victims of human trafficking and other insidious cabal activities take place deep within the earth.

Insiders and researchers say that advanced technology developed in secret, often from recovered extraterrestrial spacecraft, is stored and engineered in these secretive bases."
https://stillnessinthestorm.com/2020/03/researcher-claims-deep-underground-military-bases-recently-destroyed-and-has-some-evidence-to-prove-it/

"Nuclear-powered drills & neutron bombs are the primary methods used to create & dig these DUMBS underground.The drills go through rock at speeds up to 60 mph, literally melting the rock away to form a smooth glass like surface around the edges of the tunnels."
https://amg-news.com/the-underground-war-happening-now-deep-underground-military-bases/

"vast interconnected Deep Underground Military Bases (DUMBs) complex that is connected with Nationwide Hwys. & tunnels with Magnetic Levitating Trains (MAGLEVS), capable of speed up to 17,000 mph., that connect to all facilities & DUMBS throughout the World.

These facilities have incredible stores of food, water, DNA & seed banks; all fully supplied with autonomous free energy supplies!"
https://blessed2teach.com/cabals-dumbs-deep-underground-military-bases-gene-decode-b2t-show-oct-23/

"Deep Underground Military Facilities are not a conspiracy. What happens beneath our feet uses trillions of dollars from the Black Budget for special projects that the majority of the human race knows nothing about."
https://www.collective-evolution.com/2013/11/07/right-beneath-your-feet-the-hidden-reality-of-deep-underground-military-bases/

"In America there are over 120 Deep Underground Military Bases situated under most major cities, US AFBs, US Navy Bases and US Army Bases, as well as underneath FEMA Military Training Camps and DHS control centers.”"
http://www.thetruthdenied.com/news/2012/12/14/deep-underground-military-base-d-u-m-b/

"Timothy of Canada tells a wild story, a story of underground military bases where animal and human sacrifices nourish the bowels of creatures that have inhabited the earth long before man arrived."
http://thewatcherfiles.com/underground.htm

“You think you’ve been in a dark environment?” a former special operations soldier-turned trainer said. “Wait until you get into a deep underground facility and the power’s cut. That is scary.”
https://www.militarytimes.com/news/your-army/2019/02/26/the-subterranean-battlefield-warfare-is-going-underground-into-dark-tight-spaces/

List of Deep Underground Military Bases (DUMBs)
https://theeventchronicle.com/list-of-deep-underground-military-bases/