L:70000
V:151

Ogof Draenen, Hawthorn Cave, Ogof Draener


NGR: SO 24644 11787
362 m.asl

Monmouthshire , Northern Outcrop - East (Morlais to Abergavenny)
map using leaflet map:
Cave
Access When approaching from Blaenavon, take a left turn at Keeper's Pond. The first building on the right is the Lamb & Fox pub. Park opposite the pub on an area of concrete. Continue down the road and cross the stile immediately to the north of the Pwll Du Adventure Centre. Follow the fence you've just crossed down a steep slope until you reach a small stream. From here an obvious path leads directly to the entrance. The cave is gated. Current Access arrangements Current Access arrangements
Description Ogof Draenen is one of the largest caves in Britain. It offers a great variety of caving and some very spectacular sights. The cave should not be underestimated and the round trip should be treated very seriously. The entrance dig drops into a low crawl where there is a gate. Beyond the gate, a hole on the right leads down to a low, wet, bedding plane crawl, which emerges in a boulder choke. A squeeze down through the choke (care is required) reaches the top of an 8m scaffolded shaft. This was the break through point and emerges in a small chamber. Straight on are Darling Rifts, which lead to Big Bang Pitch and the original Pitch Bypass. However, an easier route is to duck under the right hand wall, into Spare Rib. Dropping down a slot on the left, leads to an inlet which can be followed down a cascade, to a chamber where the original Pitch Bypass rejoins. A low passage on the right leads via a 5m climb down to Cairn Junction, in the impressive main passage: Beyond A Choke.
History CwmbranCC; Morgannwg CC 1994 after extensive digging since 1991
Hydrology
Conservation
RIGS: 564 Ogof Draenen SAM: MM189;MM225;MM227;MM288;MM297 GCR: 551
Survey
MCC, 1995 (2 sheets)
WCC, 1996, Wessex Series in WCC Jnl 253, p.32
Descent 124,125,127,129,131,163
CSS Grade 5, v1:1996-v5:1999 (2 sheets, withdrawn 2000)
References
Caves & Caving,65 pp.4-5, Bill Gascoine, Water tracing at Pwll Du [Quarry Sink, Siambre Ddu, Ogof Draener (sic;) to Tumble and Field Resurgence]
Caves & Caving 66, p.6, 1994, Bill Gascoine, Ogof Draenen [17km]
Descent 121, Chris Howes, pp.22-27, Sleepless Nights
Descent 122, P. Bolt, A. Garman, B. Lovett, K. Munn, pp.20-23, 20,000 metres under Pwll Du
Descent 123, P. Francis, A. Garman, P. Bolt, G. Jenkin, H. Jones, pp.20-23, Over a Score
ACG nl Spring 1995, p.10, Robin Williams, Ogof Draenen, 17th December 1994 [Discovery of Tractor Tracks]
Descent 124, 1995, Nig Rogers, pp.30-32, Only ten minutes [Galeria Garimpeiros; Lucky Thirteen]
Caves & Caving 67, pp.8-10, Bill Gascoine, Exciting finds at Ogof Draenen [18km; dye trace to Snatchwood]
Descent 125, 1995, p.8, Draenen survey published
Descent 125, 1995, Chris Densham, pp.28-30, Not Oxford Street [St Giles]
Caves & Caving 68, p.19, John Hunt & Mike Simms, Clydach Gorge: older than we thought?
Descent 127, 1995, Chris Howes, p.34, Due South [Wyvern extensions; Big Country]
Caves & Caving 69, pp.19-21, Bill Gascoine, Dye traces in Ogof Draenen
Caves of South Wales, Stratford, T. , 1995
Descent 129, 1996, Ben Lovett, pp.26-27, Dry as a Bone [Waterfall Series]
Caves & Caving 71, pp.10-13, Mike Simms, Andy Farrant & John Hunt, Ogof Draenen - Where did it come from and where will it go?
Descent 129, 1996, Mike Simms, p.27, More of Megadrive?
Descent 130, 1996, Peter Bolt; Huw Jones; Alastair Garman, p.24-26, Up at the Sharp End: Big Country, the Wild East!
Descent 131, 1996, Ian Wilton-Jones, p.35, Hexamine Highways
Compass Points 13, 1996, Arthur Millett, The Draenen Grade 5 Survey
Descent 132, Pauline Rigby, Tim Guildford, pp.20-23, War of the Worlds
Descent 133, Ali Garman, p34, Bring Down the Government
Descent 134, Steve Roberts; Jon Cooper; Gavin Lowe, pp.20-23, Into the Black
Caves & Caving 76, pp.14-15, 1997, Geoff Newton, Pilgrim's Progress or Ogof Draenen - the Chelsea Survey
Caves & Caving 77, pp.19-21, 1997, John Stevens, Draenen - the Cantankerous Surveyors
WCC Jnl 253, pp.29-34, Mark Helmore, The Draenen Log [Wessex Series]
Descent 143, Tim Guildford, pp.20-23, Prisoners of War
Descent 163, Ian Wilton Jones, pp.36-37, It's A Republican Plot
CSS nl 42(10) pp.111-113, 2000, John Stevens, Passchendaele Sump Bypass [Baron von Carno area]
Descent 179 p.12, Small Draenen extension [Gerbil Run]
Cave and Karst Science 30 (1), pp.33-36, 2003, Andrew J.Kendall and Rhian S.Hicks, Dinantian vertebrate (fish) remains in the walls of Ogof Draenen, South Wales, UK
Descent 205, p.13, Fleur Loveridge, New Draenen round-trip
Descent 210, p.17, Fleur Loveridge, Digging in Dollimore
Descent 210, pp.20-22, Tim Guilford, One, two, three or more? [entrances]
Descent 211, p.15, Martyn Farr, New Draenen entrance
CSS nl 52(5) p,81, 2010, John Stevens, The Geryon
Simms MJ, Farrant AR, 2011. Landscape evolution in southeast Wales: evidence from aquifer geometry and surface topography associated with the Ogof Draenen cave system. Cave and Karst Science, 38(1),pp.7-16
AR Farrant, MJ Simms, 2011, Ogof Draenen: speleogenesis of a hydrological see-saw from the karst of South Wales, Cave and Karst Science
AR Farrant, MJ Simms, SR Noble, 2013, Subterranean glacial spillways: an example from the karst of South Wales, UK, 16th International Congress of Speleology
Andrew R. Farrant, Christopher J. M. Smith, Stephen R. Noble, Michael J. Simms, David A. Richards, 2014, Speleogenetic evidence from Ogof Draenen for a pre-Devensian glaciation in the Brecon Beacons, South Wales, UK, Journal of Quaternary Science
Arthur Millett, 2015, Ogof Draenen Grade 5
Brendan Marris Caves of South Wales
Cambrian Cave Registry entry 853
© Cambrian Caving Council ⓗ 2017