Earth:Subterranea (geography)

From HandWiki
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:


Human-made or related

See also


  1. 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.