Arched Hallway                                         -      N      - 
(-------------------------------------------------)     W <---(M)---> -
                                                        -      S      -

Engaged columns form the articulated opening of this arch.  The area
between the arch proper and the framing columns are filled with reliefs
depicting the reign of Diocletian and his three companions.  Red and yellow
light emanates from a small semi-circular half dome conche room to your
west.  The western hallway continues north and south.