Devil's Appendix
Waterfall in Snowdonia, Wales
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The Devil's Appendix (Welsh: Nant Clogwyn y Geifr)[1] is the tallest single-drop waterfall in Wales and one of the tallest in the United Kingdom. It is a plunge style waterfall located on the Clogwyn y Geifr cliffs beside Twll Du in Cwm Idwal, Snowdonia, Wales.
| Devil's Appendix | |
|---|---|
| Nant Clogwyn y Geifr (Welsh) | |
 Interactive map of Devil's Appendix | |
| Location | Snowdonia, Wales |
| Coordinates | 53.109835°N 4.035335°W |
| Type | Plunge |
| Total height | 93 m (305 ft) |
| Watercourse | Afon Ogwen tributary |
It is formed where a small stream falls for approximately 305 feet (93 metres) to reach the slopes above Llyn Idwal.[2] Depending on flow and the ambient temperature, it can be either an ice climbing route, a single drop waterfall, or a broken waterfall.[3]