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| Retaining wall at I/17,18-5/10,11. Wall of the Great Drain at upper left ... AMS east 2764 Horizontal (normal) ... 4 Jun 1973 |
| Hydraulic Unknown Limestone (Polygonal Masonry) Good, long stretches preserved ... Ca. 500 B.C. |
| Civic Unknown Limestone Fair, foundations and lower part of superstructure ... Late 6th. B.C. to 5th B.C. |
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