The Great Hall at the Second Guard Post                -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S      -

You stand in the Great Hall of Frost Giant Keep.  The ceiling here
stretches beyond sigh upwards, and the walls are nearly half again as wide
as the hallway you just entered from.  The granite floor and walls are
covered in a thin layer of ice from the cold damp air.  You see identical
darkened alcoves on either side of the hall.