6-7 Then he went to the east gate, where he walked up steps that led to a long passageway. On each side of this passageway were three guardrooms, which were three metres square, and they were separated by walls two and a half metres thick. The man measured the distance between the opening of the gate and the first guardroom, and it was three metres, the thickness of the outer wall.At the far end of this passageway, I saw an entrance room that faced the courtyard of the temple itself. There was also a distance of three metres between the last guardroom and the entrance room