Hydraulic Unknown Concrete Rubble, Brick Fair, traces of piers ... 2nd A.D.
Hydraulic Unknown Limestone (Polygonal Masonry) Good, long stretches preserved ... Ca. 500 B.C.
Great Drain north of the stone aqueduct. For view of the junction of the stone aqueduct and the East Branch of the Great Drain, see 1997.13.0308 ... AMS north 5765 Horizontal (normal) ... 15 Jun 1955