
A subterranean waterfall, tierous waterfall, or underground waterfall is a waterfall located underground, usually in a cave or mine. 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. The highest known subterranean waterfall is in the Vrtoglavica Cave in Slovenia, with at least 400 metres (1,300 ft).
| Name | Height | Location | Notes |
|---|---|---|---|
| Vrtoglavica Cave waterfall | 400 m (1,300 ft) | Plužna, Bovec |
Highest subterranean waterfall |
| Gaping Gill waterfall | 98 m (322 ft) | North Yorkshire, England |
Located in the Yorkshire Dales |
| Grotte aux Fées waterfall | 77 m (253 ft) | Saint-Maurice, Valais |
The highest waterfall in a show cave |
| Silver Falls | 64 m (210 ft) | Townsend, Tennessee |
Located in the Tuckaleechee Caverns |
| Ruby Falls | 44 m (144 ft) | Chattanooga, Tennessee |
|
| Lacy Suicide Falls | 42 m (138 ft) | Cass, West Virginia |
Located in the Cass Cave |
Media related to Subterranean waterfalls at Wikimedia Commons