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| Hydraulic Unknown Concrete Rubble, Brick Fair, traces of piers ... 2nd A.D. |
| Fortification Unknown Reused Limestone and Marble Material, Rubble Core Good, up to three meters high ... Ca. 282 A.D. |
| Rubble repair of Byzantine date north of the Middle Gate (to be removed). Poros Aqueduct in center ... AMS east 1076 Horizontal (normal) ... 3 Jun 1959 |
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