Category:Subterranea
Wikimedia category / From Wikipedia, the free encyclopedia
Subterranea refers to underground structures, both natural (such as caves) and man-made (such as mines). Some subterranean features are secret places(see also Category:secret places); most, like road tunnels, subway systems and sewers, are parts of public infrastructure.
Wikimedia Commons has media related to Subterranea.
- For more information, see Subterranea (geography).