Hydraulic Unknown Limestone (Polygonal Masonry) Good, long stretches preserved ... Ca. 500 B.C.
Hellenistic branch of the Great Drain at the east side of the plateia of the "East Stoa" (East Building): after tipped cover slab and patchwork at the north side were removed. Compare with 1997.13.0160 ... AMS west 4981 ... 1 Feb 1956
