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| Transportation Unknown Packed Gravel Good ... 6th B.C. to 12th A.D. |
| Religious Unknown Limestone Good, most orthostates in situ ... Late 5th B.C. |
| Hydraulic Unknown Limestone (Polygonal Masonry) Good, long stretches preserved ... Ca. 500 B.C. |
| Unknown Unknown Concrete Poor, foundations only ... 5th A.D. |
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