Subterranean river in Castellet-lès-Sausses
Subterranea are underground structures, both natural (such as caves) and human-made (such as mines).[1] Some subterranea and related topics include:
Natural
Human-made or related
See also
References
- ↑ Margineanu, Romul Mircea (2019). "Radon measurements in underground mines and caves from several European countries". AIP Conference Proceedings (Author(s)) 2076: 050004. doi:10.1063/1.5091643.
| Original source: https://en.wikipedia.org/wiki/Subterranea (geography). Read more |