Subterranea (geography)
Subterranea are underground structures, both natural (such as caves) and human-made (such as mines). Some subterranea and related topics include:
Natural
Human-made or related
- Borehole
- Bunker
- Burial vault (tomb)
- Casemate
- Catacombs
- Cave dweller, Underground living
- Cave temple
- Cellar
- Dungeon
- Dugout (shelter)
- Fogou
- Mine
- Rock cut architecture, rock-cut tomb
- Smuggling tunnel
- Tunnels (street tunnel, train tunnels)
- Underground city, umbrella article for underground dwellings and facilities
- Underground rapid transit system
- Wine cave
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