Remember back in the early days of the "War on Terror" when bin Laden was suppose to have a cool super-villain (or orc chieftain, what have you) lair beneath a mountain in a cave complex called Tora Bora ("Black Cave" in Pashto, which only adds to the mystique)? Turns out that wasn't true, but in the those days of fevered speculation, the Times of London produced this cool cross-section:
Obviously, you could put some sort of terrorist mastermind there, but it could also double as the sanctum of Cthulhu cultists or goblins, or whatever. Reality's loss is your game's gain!
17 minutes ago