OGOF CLOGWYN
- Thread starter Lu
- Start date
cap n chris
Well-known member
Lu, have sent you a message with details!
Ship-badger
Member
http://www.cavedatabase.co.uk/showacave.asp?id=2
rhychydwr1
Active member
There is a book which describes all the caves in the Clydach Gorge, but I am not allowed to mention it 
rhychydwr1
Active member
OGOF CLOGWYN LLANELLY
NGR SO 2129 1238 A 770 feet
L 1150 feet
see page 26 for survey. VR 20 feet
From the lay-by on the Heads of the Valleys road at Black Rock, follow the road uphill for ¼ mile. About 25 yards before the electricity pylon a steep pathway leads down to the river. The cave is on the opposite bank a few feet downstream, about 20 feet above the river. A small stream usually issues from the opening. In the Dowlais limestone.
A good cave for beginners. The caves contains some fine examples of rock shelves, developed by phreatic action, cf photo on front cover. The main entrance is above a small overhang which can be ascended without much difficulty. There are two more very tight entrances to the right. The entrance leads directly to an active stream passage with fine rock shelves. The water is quite deep in a few places but can be easily traversed. The passage is followed to the sump at the end. A few feet before the main sump, a crawl low down on the right hand wall can be followed to another smaller sump.
At one of the right-angle turns in the streamway, a high level muddy passage can be followed back towards the cliff face where daylight can be seen through an impenetrable crack. The passage then turns right and becomes larger but soon ends.
The cave has been know for a long time, but the first recorded exploration was by the SWCC in 1951, inscriptions on the walls date from 1850. In 1996, Duncan Price (ChSS) dived the terminal sump, but the heavily silted and constricted end of the underwater passage means that further extension is unlikely, however work continues.
References:
ACG&AS N/L April 1964. Dived by Mike Jeanmaire for 30 feet but way on blocked by silt.
BC 22 85-86; 95-96; 25 9-16; 26 46-48; 29 70-74
CDG N/L (63) 17; (76) 17; (117) 17 dived for 60 feet;(121) 33 dived for 100 feet.
CSI p 9
CWM p 76
Descent (126) 9
HCC N/L (4) 10-12; (5) 2; (12) April 1960 sump lowered 5 inches by pumping.
Stratford p 31
SWCC N/L May 1951; Our Caves (5) 4 pp S.
see page 26 for survey
NGR SO 2129 1238 A 770 feet
L 1150 feet
see page 26 for survey. VR 20 feet
From the lay-by on the Heads of the Valleys road at Black Rock, follow the road uphill for ¼ mile. About 25 yards before the electricity pylon a steep pathway leads down to the river. The cave is on the opposite bank a few feet downstream, about 20 feet above the river. A small stream usually issues from the opening. In the Dowlais limestone.
A good cave for beginners. The caves contains some fine examples of rock shelves, developed by phreatic action, cf photo on front cover. The main entrance is above a small overhang which can be ascended without much difficulty. There are two more very tight entrances to the right. The entrance leads directly to an active stream passage with fine rock shelves. The water is quite deep in a few places but can be easily traversed. The passage is followed to the sump at the end. A few feet before the main sump, a crawl low down on the right hand wall can be followed to another smaller sump.
At one of the right-angle turns in the streamway, a high level muddy passage can be followed back towards the cliff face where daylight can be seen through an impenetrable crack. The passage then turns right and becomes larger but soon ends.
The cave has been know for a long time, but the first recorded exploration was by the SWCC in 1951, inscriptions on the walls date from 1850. In 1996, Duncan Price (ChSS) dived the terminal sump, but the heavily silted and constricted end of the underwater passage means that further extension is unlikely, however work continues.
References:
ACG&AS N/L April 1964. Dived by Mike Jeanmaire for 30 feet but way on blocked by silt.
BC 22 85-86; 95-96; 25 9-16; 26 46-48; 29 70-74
CDG N/L (63) 17; (76) 17; (117) 17 dived for 60 feet;(121) 33 dived for 100 feet.
CSI p 9
CWM p 76
Descent (126) 9
HCC N/L (4) 10-12; (5) 2; (12) April 1960 sump lowered 5 inches by pumping.
Stratford p 31
SWCC N/L May 1951; Our Caves (5) 4 pp S.
see page 26 for survey
Andy Sparrow
Active member
rhychydwr1 said:
Not a bad description. A few comments:
"The water is quite deep in a few places but can be easily traversed." It's just about knee deep, that's all.
"a crawl low down on the right hand wall can be followed to another smaller sump." No sump - it just becomes too small.
"At one of the right-angle turns in the streamway, a high level muddy passage can be followed back towards the cliff face where daylight can be seen through an impenetrable crack. " There is a passage branching from this at low level that goes through a squeeze and continues as a crawl to connect with the streamway near the entrance through a hole in the roof allowing a nice little round trip.
You can have a lot of fun in this cave with small kids using cheap inflatable boats. The first 30-40 metres is all knee deep canal which they can float along very safely and happily.
