Rampaged Room                                          -      N      - 
(-------------------------------------------------)     - <---(M)---> E
                                                        -      -      -

Scattered notes on the cloning and creating of new life forms tell the
story of how this lab got destroyed.  Reading the last log, you learn that
the scientists have created a genetic mutation that they were unable to
secure in a cage.  You suspect that this creature is what has been
destroying the lab and killing the workers.  
     A thin chain hangs from the ceiling, instructing, "in case of emergency, pull cord".
A castle guard tries to keep alert during his long shift.