It didn't sound like the Underground abides by the rules of any of our worlds, so I'm not surprised... The city might keep evolving the longer we're here.

[New locations popping up without any explanation? Wowie. She watches him flick the example photo, a little amused.]

That's exactly the point, actually. It's a selfie— a picture you take of yourself. The scenery isn't important unless you're trying to create a specific ambiance.