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| Drain ... AMS 61 Horizontal (normal) ... 2 May 1932 ... Drain. |
| Drain ... AMS Horizontal (normal) ... Drain. |
| Drain ... AMS Horizontal (normal) ... Drain. |
| Drain ... AMS Horizontal (normal) ... Drain. |
| Drain ... AMS Horizontal (normal) ... Drain. |
| Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. From the south ... AMS north 673 Horizontal (normal) ... 1 May 1932 ... Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. |
| Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. From the south ... Scanned 2005 for the 75th anniversary exhibition and publication. 673 Horizontal (normal) ... May 1932 ... Drain 4, Drain 1, Subsidiary Drain 2, and Drain 2. |
| From south (slightly east of above). From left to right: Drain 1; Drain P; Drain 3; Drain 4H; Drain 4; Drain 8 ... AMS Horizontal (normal) ... From left to right: Drain 1; Drain P; Drain 3; Drain 4H; Drain 4; Drain 8. |
| Elliptical Drain. Great Drain. Looking north ... AMS Horizontal (normal) ... Elliptical Drain. Great Drain. |
| From south. From left to right: Drain P; Drain 3; Drain 4H continued; Drain 4 ... AMS Horizontal (normal) ... From left to right: Drain P; Drain 3; Drain 4H continued; Drain 4. |
| Stretch of Roman drain interrupted by Great Drain (continuation of drain) ... AMS 1210 Horizontal (normal) ... 16 Jul 1970 ... Stretch of Roman drain interrupted by Great Drain (continuation of drain). |
| Brick Drain ... AMS 199 Horizontal (normal) ... 9 Jun 1931 ... Brick Drain. |
| Poros drain ... AMS 801 Horizontal (normal) ... 3 May 1938 ... Poros drain. |
| Poros drain ... AMS 804 Horizontal (normal) ... 3 May 1938 ... Poros drain. |
| Drain III ... AMS Horizontal (normal) ... June 1981 ... Drain III. |
| Drain III ... AMS Horizontal (normal) ... 22 Jun 1981 ... Drain III. |
| Drain 2 ... AMS Horizontal (normal) ... Drain 2. |
| Drain 10 ... AMS 3487 Horizontal (normal) ... October 1949 ... Drain 10. |
| Tile drain ... AMS Horizontal (normal) ... Tile drain. |
| Tile drain ... AMS Horizontal (normal) ... Tile drain. |
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