I've heard about "DUMB's" (deep underground military bases) many times on this forum, but I can't find any comprehensive info on them that can be verified. The videos that I did come across seem to be too tinfoil-hat for me to trust. (ex. MAGLEV tunnels thousands of miles long, 28% of U.S. GDP spent to build these bases, aliens in the tunnels...)

Furthermore, there's speculation that some earthquakes might be the white hats destroying DUMBs.

Where are they and what are they used for? What's the relationship to Q?