A Fork in the Tunnel                                   -      -      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S      -

The blue globes of light along the wall illuminate a small part of the
hallway, but you see another passage branch off into total darkness.  As you
gaze around at the lights, you feel some foreign presence within the walls. 
Your pulse begins to quicken and adrenaline flows through your veins as you
sense some sort of danger.  Maybe this place isn't quite as deserted as you
want to believe.