If you're feeling snoopy, and want to see random hidden locations the team has been in, you should be reading here. Let's see how many locations we can find! (without getting caught by the devs! :D)
I've found TB-03, which links to Hall 1, which links to other rooms, including other TB rooms. http://beta.glitch.com/locations/LIF1164UB012HL4/ I also found "spirited" http://beta.glitch.com/locations/LIFH8R7TUV02R5D/
The most interesting part is that most of these hidden locations are in Jethimadh Towner: Base. Is this the devs secret hidey hole?