Sorry I just had to do this.

[ngauger]

Thew light doesn't "go out" because it was never "in" in the first place. It was "on", an entirely different scientific principle.

Yes, it is on the ceiling (or wall) "in" the tunnel Or maybe it's just past the other end of the tunnel, that would make it "out" in the open - but still looking like it was "at the end of the tunnel" to someone else "in" the tunnel looking down (or up) the tunnel.