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Ffrydiau Twrch Resurgence, Ffrwd Ar Dwrch


NGR: SN 77033 16256
333 m.asl

Carmarthenshire , Northern Outcrop - West (Black Mountain)
 map using leaflet map:
Rising
Access Marked on both the 1:50000 Sheet 160 and 1:25000 Sheet OL12 OS Maps.
Description This is a very large resurgence which has been dug since the 1940's. A 5 metre tunnel was excavated without success. The rising is in faulted limestone surrounded by boulder clay and grit blocks.
History Known for centuries. Dug by P.I.W. Harvey and I.Nixon in 1947 and W.H. Little in 1951
Hydrology Yield recorded as 6.75 ml/d [.078 cumec] Tests
Conservation SSSI: 0854 Mynydd Du (Mixed)
Gallery

Brendan Marris
2012
Survey
References
British Caver, 16, 1947, p.79
British Caver, 17, p.95
British Caver, 23, 1952, p.11
British Caver, 6, 1941, p.49
Cambrian Caving Council Newsletter 7, p.2
Cave Sump Index. South Wales, Mel Davies, 1966, p.13
HCC nl. 26, 1970, p.10
HCC Newsletter 27, p.10
HCC Newsletter 28, p.11
Proc.Geological Association, Volume 42 (45), 1931, p.305
Red Dragon Number 10, p.4
SWCC Newsletter 1, 1952, p.4
SWCC Newsletter 10, 1954, p.10
BGS [borehole] record of spring [1987]
SWCC Newsletter 72, 1973, pp.24-25, [G.H.Jones], The Twrch
SWCC Newsletter 73, 1973, p.13 [negative dye test from Carreg yr Ogof]
SWCC Newsletter 97, 1983, p.13, Bill Gascoine, A Hydrological Study of the Llygad Llwchwr and Ffridiau Twrch Resurgences
SWCC Newsletter, 1949
The Caves of Carmarthen, 1990, p.19
Search for further records Browse registry map
Cambrian Cave Registry entry 152
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