I'm thinking of a movie scene where somebody is held captive in some sort of military base or facility, and they escape only to find the place completely abandoned, with things like air vents/hoses not even attached to anything. And I think the unfinished facility is in the middle of nowhere?
I thought it was Source Code but I just re-watched that and that wasn't it, unless its a deleted scene or something. If you've ever seen The Game by David Fincher, this scene I'm trying to remember had a very similar vibe.