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GB cave

  • Thread starter Thread starter truescrumpy
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truescrumpy

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At the end of the Main Chamber where it ends in the choke of silt in a small chamber ?, it was last cleared out i believe in the early 1970's ( confirm please), and there was a problem with the spoil being washed back in after a raining period, therefore it never been bothered again (confirm please).

The point I trying to make here is as the number of raining seasons dwindled over the decade, and with better technology we have now, Would the excavation of the silt be permissable by the CCC and does that small chamber have a way on ?
Do anyone remember if there was a way on ?
 
I too have asked these questions to numerous cavers on Mendip and the overall opinion was that the it was'nt
worth the man power to remove the silt and debris as the way on just diminished, although I have always
fancied having a look myself  :-\

Stu.
 
What really brought my attention was that the stream/rain has made a new course on the right side of the wall just before the silt/debris, whilst in the silt/debris, the channel caused by the water has now... dare i say it ...slighty enlarged... which suggests the water is disappearing somewhere  :-\
 
truescrumpy said:
At the end of the Main Chamber where it ends in the choke of silt in a small chamber ?, it was last cleared out i believe in the early 1970's ( confirm please), and there was a problem with the spoil being washed back in after a raining period, therefore it never been bothered again (confirm please).

The point I trying to make here is as the number of raining seasons dwindled over the decade, and with better technology we have now, Would the excavation of the silt be permissable by the CCC and does that small chamber have a way on ?
Do anyone remember if there was a way on ?
Click to expand...

The UBSS dug here for many years and excavated the passage well beyond the current termination.  Since then the dig has re-filled with sediment and this blockage is significant enough to cause the regular flooding here that backs up to a depth of 10+ metres.  A massive amount of work would be required to simply regain the original dig face.  In recent years a small hole opened a few metres back from the choke.  This was scratched at persons unknown in the vain hope that it might magically bypass the terminal choke - zero chance of that IMHO.
 
Thanks Andy for the information,  it's a shame considering such a beautiful cave could have much potential to be pushed further
 
Andy is right, check out the 1969 version of the survey (Proc UBSS 12.1) or the detailed drawing of that part of the cave given in Proc 10.1 (1963). The unfortunate fact of the matter is that all the stuff in this area just runs back together or directly into the 60 m thick pile of boulders lying straight ahead.

The only way on is over the choke. The Bat Passage dig makes slow progress but there is no way out of Disappointment Chamber & no one has found a way out of the choke on the eastern side, though many have got scared looking ....
 
That's interesting, so the 60m choke is directly under the Great Chamber on the Southside which is how deep.......
 
truescrumpy said:
That's interesting, so the 60m choke is directly under the Great Chamber on the Southside which is how deep.......
Click to expand...
Tell, you what, I'll sell you a copy of the survey of the Ladder Dig Series, made in 1966, & you can look at the detail for yourself.
 
The last four times I have been to the end of Bat Passage, say over the last couple of years, it did not seem to me that the U.B.S.S. had recently been pushing their dig.
Am I wrong?
 
graham said:
truescrumpy said:
That's interesting, so the 60m choke is directly under the Great Chamber on the Southside which is how deep.......
Click to expand...
Tell, you what, I'll sell you a copy of the survey of the Ladder Dig Series, made in 1966, & you can look at the detail for yourself.
Click to expand...

Thats why you are a lovely chap and will explain to the whole caving forum instead of just me 
 
Dr. Tony Boycott will post you a copy if you send him a cheque. He's lovely like that.

He's a jinx on ladders, mind you.
 
Here a challenging thought for you

If gough resurgance  is at an est 85m above sea level (correction please!)

Longwood cave is est 215m above sea level (correction again please!)  but the sump is 173m below which equates it to being 42m above sea level,
and would probably flow down blackrock then down the gorge? and appears to be lower than the Gough's resurgance

GB cave entrance is est 260m  above sea level (another correction please!) what is the depth of the GB cave ?

What would be the most likely route GB and the stream  would be in order to reach the Gough resurgance or does it not! 


 
truescrumpy said:
Here a challenging thought for you

If gough resurgance  is at an est 85m above sea level (correction please!)

Longwood cave is est 215m above sea level (correction again please!)  but the sump is 173m below which equates it to being 42m above sea level,
Click to expand...
If Longwood is proven to flow to Goughs, which it is, then it is physically impossible for a sump in longwood to be lower than the resurgence, to achieve this water would have to flow up hill against gravity and the laws of physics.  :o
truescrumpy said:
and would probably flow down blackrock then down the gorge? and appears to be lower than the Gough's resurgance
Click to expand...
The cave does not have to follow surface topography and almost certainly doesen't. The main controls will be the geological structures - folds, faults, joints and dip (of bedding) and hydrological controls - water tables, perched sumps. It is possible that the surface topograpy may also be controlled by similar geologic features but the geologic structures may be different at the surface than at depth in the rock.
truescrumpy said:
GB cave entrance is est 260m  above sea level (another correction please!) what is the depth of the GB cave ?

What would be the most likely route GB and the stream  would be in order to reach the Gough resurgance or does it not! 
Click to expand...

GB is also positively traced to Goughs as well but the most likely scenario is that the passages/streams don't meet until nearly at Goughs.
 
I had a look at the plan of GB and compared it the map and noticed the angle of Bat Passage is going away from Gough resurgance, so i double checked with the lovely Bill Chawick aerial google map and it does appear to fall away from Gough resurgance
 
good thinking Les,

I am sober tonight!! Honest

has it ever been pinpointed to where the spore reaches to in Goughs  or has it not been done by the divers ?
 
Goughs resurgence isn't that far up the gorge, and the bottom of the gorge isn't that much above the levels which are generally no more than 10m AOD. My guess is no more than 30m AOD for the resurgence. Anyone like to confirm this?
 
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