Cross Cut E showing the back of the east wall of the drain resting on the dug bedrock fill of Layer VIII. The bedrock can be seen at bottom ... AMS west 1825 Horizontal (normal) ... July 1967
Cross Cut C showing the repair of the east wall of the drain and three cover slabs in situ before removal and conservation ... AMS west 1701 Horizontal (normal) ... July 1967
Cross Cut D showing the back of the east wall of the Great Drain with later conglomerate cover slabs in situ ... AMS west 1727 Horizontal (normal) ... July 1967
