Llygad Llwchwr is a 1.2 km-long cave system in the Black Mountain which forms the westernmost range of the Brecon Beacons National Park in Wales.
Llygad Llwchwr | |
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Location | Black Mountain range, Brecon Beacons National Park |
OS grid | SN 669 178 |
Length | 1.2km |
Discovery | first recorded exploration by Thomas Jenkins in 1841 |
Geology | Limestone |
Access | Free |
Translation | "Eye of the river Loughor" (Welsh) |
The entrance to the cave system is 400m from the road alongside a public footpath, and just above and to the left of an obvious river resurgence.
The cave contains a dry high level series and an active river level which is accessible at a number of river chambers separated by sumps. Beyond the fourth river chamber exploration is only possible by cave diving. The rest of the cave is suitable for novice cavers.