L:24
V:13

Ogof y Nant, Ogof Y Nant, Ogof Pen Rhiw Wen No.6


NGR: SN 73156 18936
468 m.asl

Carmarthenshire , Northern Outcrop - West (Black Mountain)
map using leaflet map:
Cave
Access The site is situated close to the Western side of the main Brynamman to Llangadog road, some 125 metres North West of the entrance track to Herbert's Quarry and is adjacent to Sinc Ger-y-Ffordd site. There are no restrictions for visiting, however during the summer the surrounding area is a very popular spot for tourists, hence making the site difficult to explore. The water is believed to emerge at Llygad Llwchwr resurgence. Water tracing by chemical methods Must Not Be Used, as this is a public water supply.
Description Hole amongst rocks and small cliff near sink and road. The cave consists of a single passage or route of some 24 metres in length containing a small stream only active during wet weather. A low entrance gives access to a very tight rift some 5 metres in depth, followed by a letter box shaped constriction which leads to a short descent through very loose boulders into a crawl under a low arch followed by a very tight rift leading to a small terminal chamber and finally ending in a gravel filled choke. A handline or ladder is essential for the entrance rift. Great care is needed in exploring this cave due to unstable loose boulders.
History Eddie Morgan, 1970; Grwp Ogofeydd Llygad y Mynydd 1979; Pete Francis, SWCC, 1985; GOG 1993
Hydrology Tests
Conservation SSSI: 0854 Mynydd Du (Mixed)
Gallery

Rhys Williams
2010

Brendan Marris
2008
Survey
British Caver Vol 71, p.14
Ogof Y Nant - Grwp Ogofeydd Llygad y Mynydd publication. Grade 1 Survey
GOG, 1996
References
British Caver, 71, 1978, p.14
Cambrian Caving Council Newsletter 7, p.2
Caves and Caving, Summer 1993, p.6, Nig Rogers, Ogof y Nant, in Bill Gascoine, South Wales News
Chelsea Speleological Society Journal, Volume 23 (8), p.91
Chelsea Speleological Society Journal, Volume 27 (10), p.148
Descent 136, 1997, p.10
Descent 138, 1997, p.15
Ogof Y Nant - Grwp Ogofeydd Llygad y Mynydd publication. Contains information on the cave
The Caves of Carmarthenshire, Oldham, T.
ISCA Caving Club Journal 1, Volume 1, p.34
Red Dragon , Number 10, p.4
Cambrian Cave Registry entry 62
© Caving Wales ⓗ Ogofa Cymru