For questions dealing with things that happen beneath the surface of the planet or other celestial body, except for things that happen in water (use [underwater] for that).
This could be a metro line, a dwarven fortress, a mine, a nuclear silo, or even a natural cave. As long as the fact that it is all undergroud is relevant, use of this tag is pertinent.
|
created |
10 years, 2 months ago |
|
viewed |
13 times |
|
active |
9 years, 8 months ago |
|
editors |
1 |
