Hehe. I suppose if I haxz0red enough I could plant one of those caves in the game, somewhere, but the only catch is that you cannot explore in them. The exit vanishes when you enter and you just wander around in… what… limbo? And when you step in the wrong place, everything fades to black. I think that means your soul has been deleted.
That means we are in danger of being attacked by tens of thousands of rebels, all armed to the teeth with wiffle bats and trained in martial arts through kindergarten.