Plate 417. I9, looking north. A wall, close enough to touch. An opening to the right.Plate 418. I9, looking east. The passage runs three paces to a wall. An opening to the right.Plate 419. I9, looking south. The passage runs three paces to a wall. An opening to the left.Plate 420. I9, looking west. A wall, close enough to touch. An opening to the left.