At the rear of the temple compound was a large room with elaborate murals on the walls. It may have been used for ceremonial banquets, since the early excavation records mention that a large table was found in it. However, its exact use is unclear. Perhaps, like many of the spaces in Roman buildings, it was multi-purpose--used at various times for large meetings, ceremonial meals, and the nighttime initiation ceremonies for which the cult of Isis was famous.