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
Hydraulic Unknown Limestone (Polygonal Masonry) Good, long stretches preserved ... Ca. 500 B.C.
Notebook/Coins ... T.L. Shear, Jr ... 1548 1747 ... 1967