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| Tunnel east of 3a ... Laura Gawlinski ... northwest Rotate 180 ... 2 Aug 2018 ... Tunnel east of 3a. |
| Tunnel east of 3a ... Laura Gawlinski ... northwest Rotate 180 ... 2 Aug 2018 ... Tunnel east of 3a. |
| Tunnel east of 3a ... Laura Gawlinski ... southeast Rotate 270 CW ... 3 Aug 2018 ... Tunnel east of 3a. |
| Tunnel east of 3a ... Laura Gawlinski ... northwest 3506 Horizontal (normal) ... 2 Aug 2018 ... Tunnel east of 3a. |
| Drain A cleared, looking down (east) from tunnel ... AMS Horizontal (normal) ... Drain A cleared, looking down (east) from tunnel. |
| Tunnel east of 3a, southeast end ... Laura Gawlinski ... southeast Rotate 180 ... 2 Aug 2018 ... Tunnel east of 3a, southeast end. |
| Late Roman Wall, east face, before tunnel ... AMS Horizontal (normal) ... Late Roman Wall, east face, before tunnel. |
| Tunnel east of 3a, southeast end ... Laura Gawlinski ... northwest 3500 Horizontal (normal) ... 2 Aug 2018 ... Tunnel east of 3a, southeast end. |
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