Plate 557. H12, looking north. A wall one pace ahead. An opening to the left.Plate 558. H12, looking east. A wall, close enough to touch. An opening to the left.Plate 559. H12, looking south. A wall, close enough to touch. An opening to the right.Plate 560. H12, looking west. The passage runs seven paces to a wall. An opening to the right.