| Name | Mare Island |
| Address | Mare Island, Vallejo, California, 94592, United States |
| Date | 0000-00-00 |
| Time | 00:00:00 |
| Category | unknown |
| Description | The former Naval shipyard is open for exploring - mostly.... |
| Coordinates | 38.09470, -122.28210 |
| Web address | /places/mare-island |