| 11. | During periods of low volume, the river disappears underground and becomes a subterranean river.
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| 12. | Apaxco has thermal waters, and subterranean rivers with hot springs, called " Los Ba�itos ".
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| 13. | These sinkholes drain all the water, so there are only subterranean rivers in these areas.
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| 14. | It meets the subterranean River Sheaf beneath the Station.
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| 15. | The Castlereagh River is partly a subterranean river.
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| 16. | Plato contended that channels of hot and cold waters flow in inexhaustible quantities through subterranean rivers.
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| 17. | The entrance to the subterranean river is a short hike or boat ride from the town Sabang.
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| 18. | Several other novels also feature subterranean rivers.
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| 19. | The cave was formed as a result of a sinkhole eroding a kalk formation by a subterranean river.
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| 20. | For three months, refugees lived here, fishing in the subterranean river and sleeping in the cold, dripping caverns.
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