Subterranean waterfall

Short description: Waterfall located underground

Ruby Falls is an underground waterfall within a cave in Tennessee , United States

A subterranean waterfall or underground waterfall is a waterfall located underground, usually in a cave or mine.[1] They are a common feature in cave systems where there are vertical or near vertical geological structures for the weathering process to exploit, and sufficient gradient between the sink and the rising.[2][3] The highest known subterranean waterfall is in Vrtoglavica Cave in Slovenia, and is at least 400 metres (1,300 ft).[4] Renowned examples include Ruby Falls, 44 metres (144 ft) high, in Lookout Mountain Caverns, a show cave in Tennessee [5] and Gaping Gill in the Yorkshire Dales, United Kingdom with a fall of 98 metres (322 ft).

Gaping Gill chamber with the waterfall in the background.

## See also

* Waterfall
* Cavern
* Subterranean river
* Underground lake
* Subglacial lake

## References

1. ↑ "10 Most Incredible Cave Waterfalls on Earth". World Reviewer. http://www.worldreviewer.com/info/10-most-incredible-cave-waterfalls-on-earth.html.
2. ↑ Kevin Adams (1 June 2002). Waterfalls of Virginia and West Virginia: A Hiking and Photography Guide. Menasha Ridge Press. p. 32. ISBN 978-0-89732-414-4. https://books.google.com/books?id=KOnHiX7xIKIC&pg=PA32.
3. ↑ Waltham, Tony; Murphy, Phil (2013). Waltham, Tony; Lowe, Dave. eds. Caves and Karst of the Yorkshire Dales. Buxton: British Cave Research Association. p. 136. ISBN 978-0900265-46-4.
4. ↑ Pavils, Gatis (7 March 2013). "Vrtiglavica Cave and Waterfall". http://www.wondermondo.com/Countries/E/Slovenia/SlovenianLittoral/Vrtiglavica.htm.
5. ↑ "Tennessee's Spectacular Underground Waterfall". The Weather Channel. 21 March 2014. http://www.weather.com/travel/news/tennessees-spectacular-underground-waterfall-photos-20140321.

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