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 ... west 1825 ... 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 ... west 1701 ... July 1967
Cross Cut D showing the back of the east wall of the Great Drain with later conglomerate cover slabs in situ ... west 1727 ... July 1967
Drain Cuts B-C showing the bedrock level and the beginning of Well I 10:1 (upper right) ... north 1707 Horizontal (normal) ... 30 Jun 1967
