'When the Mithraeum was founded in about 168 A.D. (see inscr. No. 39) it consisted of three apartments. Room A (L. 4.65 Br. 5.80), the Mithras shrine, was entered by an axial door through a partition separating it from a central chamber B (L. 5.75 Br. 3.50), originally a house diwan, that opened into a courtyard D to the south, and a small chamber C.