• Win a Rab Nexus Pull-On with the 1st of the Inglesport Fabulous 5 competitions!

    Caption competition, closes Friday 25th April

    Click here to enter

Wookey Hole Dive - Aug 24

Admittedly I've not spend hours editing this one. Just a quick GoPro Quick auto edit of my first dive at the glorious Wookey Hole. Naturally I had to include intense music to add suspense and drama 😂

Anyway, I appreciate the views and sharing these videos with folks who perhaps don't go for the aqueous side of caving.

 
Some nice clips there; well done. Yes, it is indeed regarded by many CDG members as the spiritual home of British cave diving. I've not been there for quite a while but your video has made me nostalgic for the land of flat ale and seriously wild cider. Always enjoyed Mendip (and especially Wookey Hole) whenever I've been that far south. Always been made to feel very welcome.
 
Last edited:
Looks almost inviting 😂😂.

Just musing whilst eating my chicken and bacon sandwich. My (very limited) knowledge of cave diving is that each diver is diving “solo” i.e they are on their own.

In this type of location would another diver offer assistance (buddy breathing etc) if needed or would they look after themselves. (Appreciate it would be different in proper cave diving in Yorkshire 😱😂😂)

Would be interested how different the video would be with a “Benny Hill” type track 🤦

Thanks for posting the vid 👍
 
Thanks for sharing, good quality images and that visibility is ridiculous! 😁
It always strikes me how small an underwater passage looks when you actually see a diver in it for scale (like in your vid, or if diving with someone else). When your diving on your own the perspective makes it feel much bigger than it really is.

An extra vote for Benny Hill soundtrack ... oh,go on! (y)
 
In this type of location would another diver offer assistance (buddy breathing etc) if needed or would they look after themselves. (Appreciate it would be different in proper cave diving in Yorkshire 😱😂😂)
This is something that's open to much debate, but I guess the simple answer is that it would depend on the training and experience of those involved and the situation that arose.

The CDG don't train for "buddy breathing", though many members have trained for this situation through other agencies. However the need should never arise in a cave like Wookey, which has multiple exit points, so a diver with two independent breathing sets should have no difficulty reaching an exit point, even in the event of a catastrophic failure of one breathing set. Knowing the line junctions and exit points is obviously key and in a training situation, such as @jonnybellman 's video above, there is someone present who knows the cave, so escorting to an exit would probably be more appropriate than trying to air-share. Certainly attempting an emergency procedure that has not been trained for, practiced and agreed in advance has the potential to make a situation much worse.

Outside a training situation, we don't tend to dive together at all. For example, three of us were diving at Wookey last night, we all set off when we were ready, and passed each other at various points in the cave, but treated each other as a hazard to be avoided, not a backup. Personally, I was pleased to get into an area where the others hadn't been, as the visibility was much better and I'm sure the others felt exactly the same when they were in places I'd not been!

And another vote for the Benny Hill soundtrack! :LOL:
 
This is something that's open to much debate, but I guess the simple answer is that it would depend on the training and experience of those involved and the situation that arose.

The CDG don't train for "buddy breathing", though many members have trained for this situation through other agencies. However the need should never arise in a cave like Wookey, which has multiple exit points, so a diver with two independent breathing sets should have no difficulty reaching an exit point, even in the event of a catastrophic failure of one breathing set. Knowing the line junctions and exit points is obviously key and in a training situation, such as @jonnybellman 's video above, there is someone present who knows the cave, so escorting to an exit would probably be more appropriate than trying to air-share. Certainly attempting an emergency procedure that has not been trained for, practiced and agreed in advance has the potential to make a situation much worse.

Outside a training situation, we don't tend to dive together at all. For example, three of us were diving at Wookey last night, we all set off when we were ready, and passed each other at various points in the cave, but treated each other as a hazard to be avoided, not a backup. Personally, I was pleased to get into an area where the others hadn't been, as the visibility was much better and I'm sure the others felt exactly the same when they were in places I'd not been!

And another vote for the Benny Hill soundtrack! :LOL:
You may be interested to know that nearly 60 years ago when I trained as a diver my instructor the late Capt. Trevor Hampton had little time for buddy diving and felt divers needed to be self sufficient. He was canny enough to point out that while buddy diving might work in the clear waters of the Med. in the low visibility of British waters it was more likely to lead to problems. I was diving the other day and my buddy disappeared. He had moved a short distance from me, saw another diver go past and followed him. It was only when he got closer he realised the diver had twin tanks and they were of a different colour. He is a very experienced diver too. Meanwhile I just spuddled around taking photos until he turned up again! There have been few incidents in cave diving when a buddy might have been helpful.
 
Some nice clips there; well done. Yes, it is indeed regarded by many CDG members as the spiritual home of British cave diving. I've not been there for quite a while but your video has made me nostalgic for the land of flat ale and seriously wild cider. Always enjoyed Mendip (and especially Wookey Hole) whenever I've been that far south. Always been made to feel very welcome.
Glad to have stoked the nostalgic fire!
 
Looks almost inviting 😂😂.

Just musing whilst eating my chicken and bacon sandwich. My (very limited) knowledge of cave diving is that each diver is diving “solo” i.e they are on their own.

In this type of location would another diver offer assistance (buddy breathing etc) if needed or would they look after themselves. (Appreciate it would be different in proper cave diving in Yorkshire 😱😂😂)

Would be interested how different the video would be with a “Benny Hill” type track 🤦

Thanks for posting the vid 👍
It seems your Benny Hill suggestion has a few fans, let me see what I can do haha. I suspect some black and white & x2 speed might be required.
 
This is something that's open to much debate, but I guess the simple answer is that it would depend on the training and experience of those involved and the situation that arose.

The CDG don't train for "buddy breathing", though many members have trained for this situation through other agencies. However the need should never arise in a cave like Wookey, which has multiple exit points, so a diver with two independent breathing sets should have no difficulty reaching an exit point, even in the event of a catastrophic failure of one breathing set. Knowing the line junctions and exit points is obviously key and in a training situation, such as @jonnybellman 's video above, there is someone present who knows the cave, so escorting to an exit would probably be more appropriate than trying to air-share. Certainly attempting an emergency procedure that has not been trained for, practiced and agreed in advance has the potential to make a situation much worse.

Outside a training situation, we don't tend to dive together at all. For example, three of us were diving at Wookey last night, we all set off when we were ready, and passed each other at various points in the cave, but treated each other as a hazard to be avoided, not a backup. Personally, I was pleased to get into an area where the others hadn't been, as the visibility was much better and I'm sure the others felt exactly the same when they were in places I'd not been!

And another vote for the Benny Hill soundtrack! :LOL:
I can't really add anything more to Pete's answer here. He's certainly got more authority to explain the CDG ways of solo diving.

In this instance, Myself and Nick did dive together, primarily for Nick to guide me through as it was my first time at the site. As has been said above, ultimately we are responsible for our own gas management and issue resolution. It's something me and Nick have discussed, and although we are diving together, we do so on the basis that the other person is self sufficient.

Having come from a recreational diving, I still dive with a long hose (more suited for gas sharing), however I am considering whether or not this makes sense with the type of diving I have progressed to. It's never a bad thing to re-assess your kit for the types of diving you're doing.
 
As Pete, Jonny and probably most of the other posters above are aware, the CDG have recently updated their risk assessment to reflect, in part, the increasing amount of cave diving occurring in the UK where multiple divers are in the water at the same time. There also seems to be an increasing number of CDG divers actively cave diving across the world at sites where team diving is the norm, so more and more members have "team diving skills". That being said, each dive is its own event with its own plan. Solo diving, or "solo diving in a group", is still most common in the UK.

The risk assessment is a public document, which it is hoped any cave or mine diver in the UK would consider useful. Suggestions and updates are always welcome!

The CDG risk assessment is available here: https://cavedivinggroup.org.uk/wp-content/uploads/CDG-Risk-Assessment-V2.8-30Apr2024-Final.pdf
 
As Pete, Jonny and probably most of the other posters above are aware, the CDG have recently updated their risk assessment to reflect, in part, the increasing amount of cave diving occurring in the UK where multiple divers are in the water at the same time. There also seems to be an increasing number of CDG divers actively cave diving across the world at sites where team diving is the norm, so more and more members have "team diving skills". That being said, each dive is its own event with its own plan. Solo diving, or "solo diving in a group", is still most common in the UK.

The risk assessment is a public document, which it is hoped any cave or mine diver in the UK would consider useful. Suggestions and updates are always welcome!

The CDG risk assessment is available here: https://cavedivinggroup.org.uk/wp-content/uploads/CDG-Risk-Assessment-V2.8-30Apr2024-Final.pdf

Impressive document 👌

Makes sobering reading.
A 30+ page document of “risks” all with a potential “fatal” outcome (except bumping into obstacles and nutrition) before mitigation 😱. Keep up the good work 👍
 
Team vs. Solo cave diving is an interesting topic and across the world there exists a whole spectrum of approaches to how cave diving is conducted. This is largely driven by the environment in the actual sumps and caves being explored. Each style has evolved from initially being quite experimental, with all the unknown dangers associated with that, but have eventually developed into robust systems that can be effectively be passed on to the next generation of trainees with lower risk and improved skills.

From what I know of the CDG approach, the idea of being totally self sufficient is very important. Lots of underwater passage and particularly the low visibility doesn't lend itself to effective communication between divers or skills that require two divers to work closely together (eg. gas sharing). There also appears to be a strong ethos of personal preference and customisation of equipment to suit the exact conditions a diver will be working in. (e.g Wetsuit for robustness vs. Drysuit for warmth, Harnesses suitable for hybrid use with SRT, Choice of cylinder sizes, Splitting of down of gear for transport etc.)

My cave diving background is at the complete other end of the spectrum, with GUE, an American cave diving organisation that is team focussed and has a very standardised approach to equipment and procedures. To an external observer, some of this would seem a bit ridiculous with almost everything being identical between divers and also a very similar in the base configuration for a dive on a reef all the way through to an 8 hour cave dive with a full day of decompression. From my experience, this approach works really well for international projects where lots of divers come together and there is no doubt or confusion about how a particular problem is going to be handled.

As noted above, I've also started to see more hybrid diving between the two approaches. I think this is great. It allows some really good information and skills sharing. It allows divers with different skills to collaborate (e.g side-mount divers helping push particular small passages or teams being able to load out huge amounts of gear beyond long sumps quickly and efficiently).

However, I have seen and heard of some examples where the two schools of thought come together and there are some unintended issues and potential risks. Examples such as 'team divers' starting to get involved with SRT to approach a sump and hauling cylinders loose in bags, without a sling. 'Solo divers' coming along on a team dive but not having matched size cylinders, giving different runs times, which limits the team to the smallest reserve. Also different approaches to how reserves are staged in cylinders within the cave. For solo diving, 1/3rd in all cylinders makes sense. For team diving, 1/2s in stages, keeping additional reserve in the backgas is arguably safer because it gives more options to donate gas. A hybrid team starting out with a mixed plan for this is a bit of a recipe for confusion, with stages dropped in random places.

One thing is for sure, with all cave diving you need a plan for what do when something goes wrong. A solo diver will have this nailed before they extend their experience to more challenging caves. Divers trained as a team will drill and practice so they've got their responses nailed too. Just putting the two types together on a single dive may mean you get two different responses to the same problem. This needs careful thought, and potentially a step back to common ground and more training together to get back to same standard of safety each is used to.
 
Thanks for sharing, good quality images and that visibility is ridiculous! 😁
It always strikes me how small an underwater passage looks when you actually see a diver in it for scale (like in your vid, or if diving with someone else). When your diving on your own the perspective makes it feel much bigger than it really is.

An extra vote for Benny Hill soundtrack ... oh,go on! (y)
It's called "Yakety Sax" if you're trying to source it for an alternative take.

As someone who's not a "real" diver, although I stick a fin in the water now and again so let's say 1/2 diver... I actually really like the (very few) videos out there where there is just the original sound, although if for example a GoPro is in a waterproof case, not sure how that's recorded? The sound of the second stage, an occasional bottle clunk, if dive scooters are used (not so much UK sumps ;) but in mines) they make nice whirring noises. It all gives it an underwater feel, rather than music which seems to make it feel less underwater for me.

For me anyway, it gives an extra dimension I love. My first ever dive (doing an open water with a bit of a cowboy outfit abroad, zero pool sessions after you watched the PADI online training then you were given kit and sent to the harbour) I was mesmerised by the different sounds, boats that make deep marine diesel engine noises on surface, making strange whining/whirring noises as they passed nearby. The noise of breathing. I love hearing those underwater sounds.

Anyway I'd put original sound in first place for soundtrack, even better than Yakety Sax!

Enjoyed the video, thanks!
 
It's called "Yakety Sax" if you're trying to source it for an alternative take.

As someone who's not a "real" diver, although I stick a fin in the water now and again so let's say 1/2 diver... I actually really like the (very few) videos out there where there is just the original sound, although if for example a GoPro is in a waterproof case, not sure how that's recorded? The sound of the second stage, an occasional bottle clunk, if dive scooters are used (not so much UK sumps ;) but in mines) they make nice whirring noises. It all gives it an underwater feel, rather than music which seems to make it feel less underwater for me.

For me anyway, it gives an extra dimension I love. My first ever dive (doing an open water with a bit of a cowboy outfit abroad, zero pool sessions after you watched the PADI online training then you were given kit and sent to the harbour) I was mesmerised by the different sounds, boats that make deep marine diesel engine noises on surface, making strange whining/whirring noises as they passed nearby. The noise of breathing. I love hearing those underwater sounds.

Anyway I'd put original sound in first place for soundtrack, even better than Yakety Sax!

Enjoyed the video, thanks!
Regarding underwater noise the submarine environment isn't really that silent as you point out. I was amused some years ago when I took a friend for a dive in Wookey Hole up the deep and back along the shallow route to Twenty. He was an open water diver and came out to remark he could hear the machinery in the paper mill while diving. I pointed out what he was actually hearing were his bottles rattling about on the cave walls. On another occasion I was diving with a very deaf friend. This was in Scotland near a salmon farm where they had installed a seal scarer. These emit a loud clicking pinging sound as I learnt from the dive. I commented that it was a noisy dive but George my friend without his hearing aids couldn't hear a thing. I had some video though and that put him right (sound is picked up fine inside the housing). Regarding boats the noisiest sound I have heard is a chain driven ferry going overhead when in Arran. I said it sounded like a thousand metal bins full of nuts and bolts being rolled down a hill. I cowered on the seabed until it had gone!
 
The sound that gave me shivers when I first experienced it was the sound of my exhausted bubbles rumbling up and along the roof. It can be such a deep thundering, I thought the cave was collapsing 😂. Thankfully I know better now!
Regarding underwater noise the submarine environment isn't really that silent as you point out. I was amused some years ago when I took a friend for a dive in Wookey Hole up the deep and back along the shallow route to Twenty. He was an open water diver and came out to remark he could hear the machinery in the paper mill while diving. I pointed out what he was actually hearing were his bottles rattling about on the cave walls. On another occasion I was diving with a very deaf friend. This was in Scotland near a salmon farm where they had installed a seal scarer. These emit a loud clicking pinging sound as I learnt from the dive. I commented that it was a noisy dive but George my friend without his hearing aids couldn't hear a thing. I had some video though and that put him right (sound is picked up fine inside the housing). Regarding boats the noisiest sound I have heard is a chain driven ferry going overhead when in Arran. I said it sounded like a thousand metal bins full of nuts and bolts being rolled down a hill. I cowered on the seabed until it had goers
 
Underwater is a noisy place. So much so that hearing loss in very experienced divers is a recognised thing.

Some time you should sample the delightful sound of a long line of plugs and feathers gradually splitting a large underwater boulder. The sound is far more intense than doing the same thing on the surface. It's quite amazing how long it lasts as well (if being patient and just hitting the line of plugs & feathers in gradually). When you get your ear in you can use this sound to gauge which plugs and feathers to hit more forcefully, to achieve exactly the desired objective. All very satisfying when it goes well.
 
Lo
Underwater is a noisy place. So much so that hearing loss in very experienced divers is a recognised thing.

Some time you should sample the delightful sound of a long line of plugs and feathers gradually splitting a large underwater boulder. The sound is far more intense than doing the same thing on the surface. It's quite amazing how long it lasts as well (if being patient and just hitting the line of plugs & feathers in gradually). When you get your ear in you can use this sound to gauge which plugs and feathers to hit more forcefully, to achieve exactly the desired objective. All very satisfying when it goes well.
Look at Pete Hall's latest video of Rickford on Youtube. He did just that! Also Pitlamp probably remembers OCL commenting on a dive report from Derbyshire (Russet Well I think) when somebody used an air powered chisel underwater and found it rather overwhelming. Commercial divers used to risk hearing loss using jet blaster from what was called grass cutting on rig pilings.
 
Yes indeed mrodoc - and there are subsequent CDG logs which describe mitigation used as a result of OCL's words. We designed a sonic screen when our air chisel was in regular use at Malham. It certainly helped (noticeably) but I have no data to demonstrate it reduced the sound to acceptable levels. Fortunately these days there are various alternatives for rock removal underwater
 
The strangest noise I've heard underway was in Otter Hole, where a borehole was drilled into Sump 3 to irrigate Chepstow Racecourse; when the visibility is good, you can see a stainless steel pipe sticking out of the roof of the sump!

On one occasion, heading out (with Chris Jewell, if I remember), the pumps were running. I knew straight away what it was, but it was still very odd at such a remote location.
 
Back
Top