Didn't really feel like clicking through a whole list of what might be portions of a map either.

Donnie squints at the back area. "Hmm..." He takes a step this way and that, ducking a little. "Hey, maybe..?" He's not entirely sure it had been there before but now that he's noticed it, he can't think of any better way to go.

I think I found an alternate route.

Carefully he slips towards the back and tries to pick his way through to this new pathway.