Mountains & hills · South Wales
Ogof y Daren Cilau
Ogof y Daren Cilau — cave in United Kingdom.

Wikimedia Commons contributors — see linked file page for photographer and licence licence
Plan your visit
- Typical visit
- 3 h–8 h
- Best time of year
- Late spring – early autumn (May–Oct)
- Nearest railway station
- Whistle Inn halt · 5.8 km
- Free entry
- Dog-friendly
About
Ogof y Daren Cilau is a named summit in the United Kingdom. Wikidata describes it as: "cave in United Kingdom". Coordinates: 51.8306°, -3.1548°.
Photo gallery
From the Wikipedia article
Ogof y Daren Cilau is a cave system in the limestone escarpment on Mynydd Llangatwg (Llangattock Mountain), which is south of Llangattock village and above Crickhowell in south Powys, Wales. The escarpment is the remnant of quarrying that had begun by the mid-18th century and initially provided limestone for building and agriculture as a fertiliser, and subsequently for the blast furnaces of the local ironworks as a flux. The cave system was discovered in 1957 and is one of the longest in the United Kingdom. The system is next to the Ogof Agen Allwedd system.
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
Reed (1961) is an extremely informative early source. The entrance to the cave was discovered in 1957 by Vic Howells of the former British Nylon Spinners Caving Club of Pontypool (which was associated with the British Nylon Spinners factory in Mamhilad). Further investigation and the removal of debris showed an entrance in which a pool of water accumulated. In the ensuing period, the water was drained away and a 400 ft passage was revealed ending in a boulder choke. After decades of work and numerous cave digging projects, a connection to the nearby cave Ogof Agen Allwedd has yet to be found, even though they are only 75 m apart at their closest point.
Description
Ogof y Daren Cilau is one of the longest cave systems in the United Kingdom (over 26 km in total) and the entrance section is long, tight and strenuous, making the trip into the further parts of the cave a serious undertaking. Because of the extent of the passages several kilometres from the entrance which would require trips of up to 20 hours to explore, some permanent underground camps have been established, including the "Restaurant at the End of the Universe", which is some thirteen hours from the entrance.
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 51.8306, -3.1548
- District
- Powys
- Parish
- Llangattock
- Postcode
- NP8 1LG
- Parliamentary constituency
- Brecon, Radnor and Cwm Tawe
- Nearest railway station
- Whistle Inn halt — 5.8 km
Sources
- wikidata: Q7080190 (CC0)
- wikipedia: Ogof y Daren Cilau (CC BY-SA 4.0)
- commons: Daren entrance.jpg (CC BY-SA 4.0)
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Frequently asked questions
- Where is Ogof y Daren Cilau?
- Ogof y Daren Cilau is in South Wales, United Kingdom (postcode NP8 1LG), in the parish of Llangattock.
- What is Ogof y Daren Cilau?
- Ogof y Daren Cilau — cave in United Kingdom.
- How do I get to Ogof y Daren Cilau?
- The nearest railway station is Whistle Inn halt, about 5.8 km away. Drivers can use postcode NP8 1LG.
- Is Ogof y Daren Cilau free to visit?
- Yes, Ogof y Daren Cilau is free to enter.
- How do I get to Ogof y Daren Cilau?
- The nearest railway station is Whistle Inn halt, about 5.8 km away. Drivers can navigate to postcode NP8 1LG.