A Small Cell                                           -      #      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      -      -

As you enter this small cell, you feel a rumbling underneath you, as if
the ground you are standing on isn't stable.  The room is roughly a square,
however made carelessly, and one side is higher than the other.  The back
wall is rounded out, with a small ledge cut for sleeping on.  There is
writing all over the walls, some coherent, some stray words.  
A prisoner is detained here, scheming for a way out.
A prisoner is detained here, scheming for a way out.