Solo Caving
- Thread starter gus horsley
- Start date
cap n chris
Well-known member
Yeah; that's obviously what's been causing it. 
D
Dep
Guest
Re Goatchurch low frequency rumbles.
Assuming it was a definite external sound (and not your belly rumbling!) perhaps a heavy lorry going down the road.
Not so sure about this in Swildons' 5 - not sure of proximity to roads etc though.
I don't think I woud be surprised at any sort of noise where there is running water.
I have heard jet aircraft underground in our local mines very faint low rumble that goes on for a while and then fades - not really subliminal though, loud enough for a fairly positive id.
It would be interesting to have a seismograph set up on Mendip (or access to existing data) and try to correlate event times. A small tremor which could not be felt on the surface, or even standing up may well be picked up through your bones if you are lying flat out in a crawl as I guess CnC may have been.
Or it may be that a few feet below you in apparently solid rock small pieces of stone were flaking off and falling hundreds of feet into the master chamber that underlies all of Burrington and indeed most of Mendip. So big that it would make GB Cavern (TLCITUK) seem tiny.
Assuming it was a definite external sound (and not your belly rumbling!) perhaps a heavy lorry going down the road.
Not so sure about this in Swildons' 5 - not sure of proximity to roads etc though.
I don't think I woud be surprised at any sort of noise where there is running water.
I have heard jet aircraft underground in our local mines very faint low rumble that goes on for a while and then fades - not really subliminal though, loud enough for a fairly positive id.
It would be interesting to have a seismograph set up on Mendip (or access to existing data) and try to correlate event times. A small tremor which could not be felt on the surface, or even standing up may well be picked up through your bones if you are lying flat out in a crawl as I guess CnC may have been.
Or it may be that a few feet below you in apparently solid rock small pieces of stone were flaking off and falling hundreds of feet into the master chamber that underlies all of Burrington and indeed most of Mendip. So big that it would make GB Cavern (TLCITUK) seem tiny.
cap n chris
Well-known member
Nah! I prefer the Fraggle theory.
Les W
Active member
It could be earthquakes. The mendips are part of the paleozoic basment making up the major structure of the UK and the Carb Lst extends beneath a large proportion of the UK albeit at great depth.
Ther have been incidents of Earthquakes "oop norf" being heard/felt on the mendips and this may be because the shock is transmitted great distances through the basement rocks. The newer sediments that sit above are less continuous and will transfer the shockwaves less well.
perhaps
Ther have been incidents of Earthquakes "oop norf" being heard/felt on the mendips and this may be because the shock is transmitted great distances through the basement rocks. The newer sediments that sit above are less continuous and will transfer the shockwaves less well.
perhaps
whitelackington
New member
I would like to agree with Les on his above statement, it makes god sense
but as I know nothing of geology,
I better had not, incase he is wrong
but as I know nothing of geology,
I better had not, incase he is wrong
mrodoc
Well-known member
I think this needs a new topic post. Noises underground are interesting. Of course the commonest rumble to hear is probably that of the mainline railway that runs under box stone mines! However once, in Doolin/St. Catherines mid way through the trip in a high level passage we heard some deep glooping echoing sounds. I thought they were coming from the terminal sump but realised later that that was such a long way off that it was impossible. Always wondered what the noise was. Otter Hole entrance series also generates some pretty amazing central heating sounds.
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