A Maze of Twisty Little Passages...
You come out into another identical room. Damn. What's going on here!? Maybe someone had nothing but a pickaxe and way too much time on their hands. Maybe the molemen have realized the merits of high-density housing and abandoned their sprawling suburbs. Maybe it's an abandoned dwarf citadel. Wait, this is a furry setting, do we even have fantasy races like that? You think you're going crazy.