| skos:altLabel | - below
- river
- rivers
- underground
- subterranean
- covered
- streams
- buried
- subterranean waters
- buried stream
- subterranean river
- subterranean rivers
- underground river
- underground rivers
- underground stream
- underground passage
- Subterranean_river
- by porous soil and underground gulleys
- cave river
- disappearing underground and then reappearing
- flows under
- flows underground
- goes underground
- land filled in above them
- largely covered over and filled in
- river went briefly underground
- subterranean flows
- subterranean section
- subterranean stream
- subterranean streams
- subterranean water
- underground outflow
- underground streams
- underground waterway
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