[Doctor Congo]

what website has those images?
I would like to learn more...

[C210N]

These are just quicky google image search images, there are probably thousands of them... search for "dumbs maps".

DUMBs - Deep Underground Military Bases.

To learn more directly, you can find sources all over - the web, telegram, bitchute, clouthub... even youtube, I'd imagine.

Try here:

https://amg-news.com/list-of-dumbs-by-state-complete-list-of-military-underground-bases-in-usa/