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| Flood in Section ΒΓ, probably sometime in the 1970's ... Horizontal (normal) ... 1970-1980 |
| West Trench, after removal of road IX, revealing roads X and XI ... southeast Horizontal (normal) ... July 2012 |
| West Trench after the removal of road IX, revealing roads X and XI ... southeast 5300 Horizontal (normal) ... 18-20 July 2012 |
| West Trench after the removal of road IX, road X in southeast corner ... southeast 5300 Horizontal (normal) ... 18-20 July 2012 |
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