Pulsating Chamber                                      -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S      -

The stone corridor you have been following intersects another, almost
identical one here.  Tunnels lead off in the four cardinal directions.  A
large, intricate mosaic is laid in the ground here, but it is too dusty to
make out many details.  It looks like some sort of creation, but of what you
cannot tell.  Four torches hang upon the walls here the flames do not
flicker like the other torches, instead these pulsate quickly creating an
effect much like a strobe light.