Ogof Draenen

Ogof Draenen (Welsh for "hawthorn cave") is, at 66 km (official figure; the true length of passage is still being revised upward, with a modern estimate of approximately 70 km),[1] the longest cave system in Wales and the second longest in Great Britain behind the Three Counties System on the Cumbria/Lancashire/Yorkshire border.[2]

Ogof Draenen
LocationNorth of Blaenavon, Wales
Coordinates51.8003°N 3.0933°W / 51.8003; -3.0933
Length66 kilometres (41.0 mi)
Discovery1994
AccessPwll Du Cave Management Group.
TranslationHawthorn Cave (Welsh)
Cave surveyOUCC survey information

The cave was known only as a small entrance on a steep hillside until several years of digging broke through into major passage development in October 1994. It was then explored at unprecedented speed to become the longest known cave in Wales.

Ogof Draenen contains a variety of spectacular decorations and some huge passages (the War of the Worlds section is probably the second largest cave passage in Britain). Its large size and occasional complexity make the cave a challenge for even experienced cavers.

The cave is managed by the Pwll Du Cave Management Group.[1][3]

References
  1. Wilton-Jones, Mark (17 April 2013). "Ogof Draenen description". cavinguk.co.uk. Retrieved 5 January 2014.
  2. "Three Counties System Connects to Create UK's First 100 Kilometre Cave System". Caving News. 7 November 2011. Retrieved 5 January 2014.
  3. "Pwll Du Cave Management Group". Pwll Du Cave Management Group. Retrieved 5 January 2022.
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