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| Wiring trench | This trench carries power from the house to the observatory. | |
| Total images: 79 | Last update: 4/14/12 10:56 AM | Help | |
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| Wiring trench | This trench carries power from the house to the observatory. | |
| Total images: 79 | Last update: 4/14/12 10:56 AM | Help | |