A Sentry Post                                          -      -      - 
(-------------------------------------------------)     - <---(M)---> E
                                                        -      -     SE

Up ahead lies a large barrier made of stone, standing at least ten feet
high, it spans the entire width of the passage.  Large obsidian gargoyles
flank the passage here, their blank stares penetrating into the darkness. 
Recessed torches create beams of light that reveal little, creating eerie
shadows on the walls.  The high arched ceiling is made of a very dark stone,
as are the walls and floor.