There are still people to find, and we still need to find a way out of this dump.

[Away from one broken building and toward many more then, since it isn't like they have anywhere else to go right now.]

So let's look. This place and that place underground were the only two, so something's gotta be up here somewhere.

[Since he's already been to the very end of that dark place, and even though he found things, he didn't find an exit.]