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| Trench to the west of the Great Drain ... Horizontal (normal) ... 5 May 1934 |
| Trench to the west of the Great Drain ... Horizontal (normal) ... 5 May 1934 |
| Trench to the west of the Great Drain ... Horizontal (normal) ... 5 May 1934 |
| View of the Great Drain and the related channels ... Horizontal (normal) ... 12 May 1934 |
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