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| Cleaning west of drain, exposing small stones lining channel ... Laura Gawlinski ... east Rotate 270 CW ... 9 Jul 2015 |
| Cleaning west of drain, exposing small stones lining channel; modern rubble construction adjacent to Great Drain wall ... Laura Gawlinski ... southeast Rotate 90 CW ... 9 Jul 2015 |
| Cleaning west of drain, exposing small stones lining channel; modern rubble construction adjacent to Great Drain wall ... Laura Gawlinski ... southeast Horizontal (normal) ... 9 Jul 2015 |
| Cleaning west of drain, exposing small stones lining channel ... Laura Gawlinski ... northeast Horizontal (normal) ... 9 Jul 2015 |
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