Ogof Fawr, Ogof Mawr

NGR: SN 98540 09628
325 m.asl

Rhondda Cynon Taff , Northern Outcrop - Central (Penwyllt to Penderyn)
map using leaflet map:
Sink Cave
Access On common land.
Description A large postglacial depression, the sink of the Nant Sychbant. Following the survey of the cave a dry entrance (this entry) was dug at the back of the shakehole.
History Marked on 1840 tithe map of Penderyn. Dug by BNSS. A small breakthrough was achieved by WSG, but ended in a massive choke beneath a 20m pitch. After floods blocked the lower parts again, a dig started in 2007 by Tony Donovan, Roy Fellows and Paul Quill broke into the cave near the sink in 2008.
Hydrology Tested to Llygad Cynon

Rhys Williams


Brendan Marris
WSG Bulletin Vol.7, No.1
Roy Morgan, 2007; R.Morgan,P.Quill 2009 in Pelobates 89
British Caver 41
British Caver 45
OUCC Proc. 4, 1965, p.23
Descent No.14
WSG Bulletin Vol.6, No.s 4,5,6,7,8,9
WSG Bulletin Vol.7, No.1
Descent 203, p.17 (2008), Ogof Fawr
Descent 205, p.13, Martyn Farr, New entrance for Ogof Fawr
Descent 206, p.18, Martyn Farr, Ogof Fawr update
Descent 208, p.19, Martyn Farr, Progress in Ogof Fawr
Descent 214, p.10, The Ogof Fawr survey
Pelobates 89 (2011), Adrian Paniwnyk, Ogof Fawr
Brendan Marris Caves of South Wales
Cambrian Cave Registry entry 706
© Cambrian Caving Council ⓗ