Looking north, Great Drain at right: Room 4 Layer 3 cleared ... AMS Horizontal (normal) ... Looking north, Great Drain at right: Room 4 Layer 3 cleared.
Great Drain at 55/Κ, looking north. About at center of stretch, the water ... AMS Horizontal (normal) ... Great Drain at 55/Κ, looking north. About at center of stretch, the water.
Looking at the bridge. Corbelled west wall at left ... north 2185 Horizontal (normal) ... June 1949
Looking at the bridge. Corbelled west wall at left ... AMS north 2185 Horizontal (normal) ... June 1949
