| A Silver mine from the 1700-1800 that was continuously worked till into the 1920s | 1212 | Friedrich_August | | | | |
| U guys like the brick in my other post so heres some more! (Plus some Sandstone dry walls) | 658 | Friedrich_August | | | | |
| An abandoned mine with an underground lake inside | 645 | ransnoir | | | | |
| Abandoned Mine in Kentucky | 241 | False_Fig_1674 | | | | |
| Abandoned mine in Pennsylvania | 230 | Dependent-Pickle5526 | | | | |
| Make shift mine locomotive made from a old motorcycle found in an abandoned California gold | 222 | panmines | | | | |
| Drainage Adit. Tasmania. | 185 | Low_Inspector6558 | | | | |
| Underground Airport of Europe left abandoned | 125 | Typical-Assistant945 | | | | |
| Rail tunnel on the Marysvale Branch of the D&RGW. Access was lost due to flooding in 1983 subsequent years have seen it become a very nice rail trail. | 67 | Ruger338WSM | | | | |
| Sneinton Tunnel | 47 | AccountIll8095 | | | | |
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