[The track is certainly a place he has not been to yet. Mostly because he hadn't seen the need to, but if they're trying to find a chink in the armor so to speak they would need to start branching out to other areas.]

This place is pretty big. It'll probably be a good idea to keep poking. Investigating something like this isn't just going to be accomplished in the library.

[Of course, there are risks to poking around.]

The downside is that once you do cross that line of where you aren't allowed things might get a little tricky. I'd proceed cautiously if I were you.