Giants/Oxlow Connection "The Chamber of Horrors"

A_Northerner

Well-known member
For the more prosaic reader who just wants info on how to tackle this classic through trip - I'm going to write a how-to guide at the end of this report. Feel free to scroll to the end if that's all you're after, instead of my inane ramblings.

Trip Dates: Sun 6/5/25 + Wed 9/5/25

Members: Jack, Jonah, Nell, Jonny (Sunday day)/Jack, Tan, Toby, Jonah (Wednesday night)
This trip has been on my long-list since I chickened out at the Connection's 50th Anniversary event in 2016. Big thanks to SUSS Members Leo and Helen who did the connection that weekend for the beta on how to tackle the ducks.

The Giants/Oxlow Connection seems to have little information available about how to tackle it. In preparation for the trip, we found minimal info beyond talking to friends who have done the connection a few times over the past decade or so. Because the info spreads by word-of-mouth, and the intervals between which people actually visit the Connection are so sparse, I think misinformation puts people off what is actually an incredibly enjoyable evening trip.

When the Connection was first made in 1966, barely a sentence was written about what came to be known as "The Chamber of Horrors". The SUSS report from the first ever tourist trip through the Connection (one week after EPC broke through in the opposite direction) describes it as "a low pool about 15ft long" alongside mentioning another benign pool you encounter right before CoH. I can't remember whether it was the great CDW (who assisted in the connection), or the great WBT (who carried out the first SUSS tourist trip) that told me they considered the passage between the two caves to be "largely a dry crawl" at the time. I counted myself amongst the people who have taken the trajectory of "dry crawl 50 years ago" to "partially/fully sumped passage nowadays" to mean the passage is slowly filling up with percolation and will no longer be passable in the future. Indeed, Reavis's video of the connection from 2014 shows the water level to be lower than that encountered by SUSS in both 2016 and 2018, continuing this trajectory. SUSS completed the through-trip in both those years despite the 3rd and final duck being fully sumped, basically by virtue of Leo having no sanctity for his own life and trusting that his ungloved fingers reaching airspace meant he could get his whole body through and breathe whatever lay beyond.

I digress - here I was with a free Sunday, a neoprene hood, two new CDG members who wanted introducing to Giants, and a really keen student to join me in checking the Connection out. After a swift Giants Round, we turned off at Poached Egg and allowed ourselves a minute to cool down, it was here that we left my CDG friends while we scouted the way through. The Connection is reached by taking the second grovelley crawl on the right side of Poached Egg, after which a couple of minutes of thrutchy low crawling through stagnant diesel-y pools leads to what is unmistakebly the Chamber of Horrors. I had the downlow on how to tackle each of the three ducks in turn: the first is long and straight with low airspace, possibly only lips out of the water; the Second is short and awkward, but with the most airspace; the Third you should expect to be sumped, but can be passed by pulling on a solid handhold in the airspace beyond. Boom. Done.

Leo and Helen also explained how to spot whether it was a go-er. Upon viewing the Connection I was sad to see that it was "a go-er": I could see the whole way through the first duck. It had a convenient face-shaped arch and was maybe an inch high at its apex. Jonah had rushed back to Poached Egg to get his hood so I took my helmet off, put my small light onto my hood, and settled into the duck to acclimatise.

I found the position of lying on my back, neck back, water lapping into my eyes with lips against limestone surprisingly non-panicking. "Damn, this means I'll probably have to do it". I awaited the comfort of Jonah's return before shuffling carefully through the duck, to prevent bow waves. I could have my eyes out of the water most of the time. I was soon in the passage beyond Duck 1, which is comfortable - you can get your whole head out of the water and turn it quite easily. I spotted Duck 2 ahead, and sloshed my way over. Duck 2 is awkward - you can see the airspace is plenty but you can't quite get at it. It's easy to lose the way on because you're focused on where the air is, and not where the passage goes. After a few attempts I gave it up and started backwards to see if Jonah could manage it. I found that returning feet-first through Duck 1 was tricky, because you have to tilt your head backwards to get your nose out and therefore can't see the way on down your body. Luckily I'm short enough that I could turn round entirely in the space between 1 and 2 and return head first, which was much more comfortable.

Jonah and I swapped places rather intimately, and I let him have a go. He managed Duck 1 with ease, shouted through that he was at #2. After a significant amount of sloshing he shouted that he was at #3 and it was sumped. Almost immediately after this I heard a jubilant whoop, confirming he had just full-sent Duck 3. I rushed into the passage, sculled through the first and reached the second. Jonah shouted through advice; keep your mouth in the airspace and move your body away from the airspace to pass through. Your neck is at an awkward angle the whole time if you're trying to keep the most airspace. With confidence you can just plough through and sod the airspace, but you're immediately at the Third (sumped) Duck and could overshoot. The space between Ducks 2 & 3 is very small, half of your body is still in the Second Duck while you're at the Third. Using the limited space available I turned to face the way on and couldn't see it. Sure as anything, it was sumped. I fumbled around in the Cadbury-brown water to figure out the passage shape. I could feel a way on, inching as close to the edge as I could, with my right arm outstretched. I couldn't feel airspace so I removed my glove to help feel the surface of the water, with my eyes fully submerged and my arm reaching ahead I could slap the water's surface beyond. Air! I waved my hand around for a bit to try and located the "bomber handhold" that Leo told me was the key to getting through. I grabbed something positive and Jonah confirmed it was the right one, with a quick pull I was on the other side.

Jonah and I cheered with joy. Though my joy was tempered by wondering how hard it would be to return, luckily the ducks are easier on the way back. I probably wouldn't recommend approaching from the Oxlow side though, as you'll likely be met with a sumped passage and no indication of how passable Ducks 2 & 1 are. Before we knew it we were beyond CoH and thrutching our way out to meet Nell and Jonny to continue our round trip. We exited the cave and vowed to return on a mid-week evening to complete the through trip.

Wednesday came and we'd recruited Toby and Tan to do the through trip. Toby and Jonah rigged Oxlow and left our 4 SRT kits at the top of Pilgrim's Way, returning on borrowed kits. Tan and I parked at the Oxlow layby just as the boys were walking back from Oxlow and we kitted up in gorgeous weather. We decided parking here, and having the longer walk to Giants in the warm daylight, was the best way to run the logistics. Unsure of the condition of the Oxlow Connection which usually requires digging, to allow for the potential of an hour or so's digging plus a potential dejected return trip out of Giant's, we set a generous callout of 4:30am; the time at which Will wakes up for his Tajiki lessons. We were hoping to make it out in time for last orders though.

We wandered over the hill to Giants, and entered the cave at 7pm. A bit of faff on Garlands while we shuttled 2 kits between 4 people, but we were soon in the Crabwalk before almost immediately climbing back up out of the Crabwalk to reach Poached Egg via the Windpipe. Jonah went first into the Connection, whilst I sat back and fettled my GoPro. I was halfway through giving Toby and Tan the explanation, tips, and tricks I outlined above when Tan said "oh, are there ducks?". It turns out she hadn't really had the trip explained to her - she was just told to turn up to Giants with a wetsuit and neoprene hood. Oh well, she was here now.

I turned the GoPro on and checked the time - 7:30pm, the possibility of food at the Peak Hotel was slim-to-nil but at this pace we would make last orders. I allowed Jonah a generous couple of minutes to pass all three ducks. His passage was unnervingly silent as he went through each one with the graceful composure of someone who had done this only 2 days ago. He shouted that he was through, I got into the first duck with helmet in one hand and GoPro pointing towards my face with the other. I was less than a metre into it when Toby shouted "Are you through yet!?", clearly he wasn't giving me the generous time allowance that I'd given Jonah. Not being in the physical or mental position to put up with any of Toby's shit I shouted "I can't hear a fucking word you're saying mate" and carried on. Going through the second time was a breeze. Knowing the way to approach each one, how long they are, and having the confidence of knowing the passage beyond makes the whole thing so much easier and really quite exciting.

I reached the far side of Duck 3 and pointed my GoPro back towards the Ducks, shouting Toby through. He found the first one easy, then thought he had done the third when he was through the second and became confused as to where the way on was. I told him to reach through for the handhold, and with a couple of attempts he was through. Finally, despite being the least prepared for the ordeal, Tan breezed through all three with ease. We were all on the other side.
 
Except Toby's light. Which he'd borrowed from Jonah.

Not wanting to go back, Toby immediately offered Jonah £65 in payment so we could head off and get to the pub. Jonah wasn't having it, he wanted his light back. He offered to go back to fetch it himself, but the passage beyond the Chamber of Horrors isn't exactly conducive to shuffling the order of your party. Jonah thrutched ahead, hoping to quickly find a spot to turn around. About 10 minutes of tight passage lead us to a small chamber with a howling draught that we could rearrange ourselves in. Despite there being 10 minutes of tight belly crawl between Jonah and the most notorious passage in Derbyshire, he still insisted on returning back along the passage to do the ducks again in the hopes of finding his light. I carried on with the rest of the group, expecting to spend a while digging out the Oxlow side of the connection, during which time Jonah would hopefully catch us up.

The next section of passage, leading to Oxlow Aven, is a mind-numbing series of thrutchy twists and turns. It passes a number of immature rifts with bellowing draughts. You are grateful for the metre-or-two every so often where you are able to manage a hands-and-knee crawl. Tiny avens dot the passage and sitting up in one every now and again is a welcome respite. Moving with a 5mm wetsuit really inhibits progress through this section, I got a boost of confidence upon reaching Five-Eighths Inlet (which was flowing despite the dry weather) because I knew where I was, but like the name suggests this is only 5/8 of the way through Oxlow Aven Crawl (I don't actually know why it's called that, but that will do).

A few dozen more twists and turns and I was at Oxlow Aven, an impressive (relative to what you have just travelled through) aven with a booming echo. Knowing that this meant we were at the far end I continued beneath the aven and poked my head into the connection.

"Bugger. Nobody has been here in a long while..."

The gravel in the floor had been swept right into an eddy at the 90-degree bend of the tightest section of passage, just after Oxlow Aven. There was just enough room to fit two fists in the way on. We were going to be here a while. The silt around the gravel had dried and set as a sort-of cement holding the gravel together. A loose piece of calcite on the floor formed a rudimentary trowel that I hacked at the floor with. Beyond the initial constriction was a static pool that filled about 1/4 of the passage. It was still not large enough to pass through. 10 mins of digging gave me my first attempt, face down, unable to turn my un-helmeted head without drowning myself I opted to go on my back, once again face-to-face with bare limestone above me. Being smaller than both Toby and Jonah I knew we'd have to dig it further, but I figured me being the other side of it would help us to tackle it together. "f*** it." I thought "Squeeze machine tactics." I breathed out and inched forwards, nudging my helmet along ahead of me. Returning round the corner feet first would be almost impossible, but the passage beyond was definitely bigger. I committed - breathe out, inch, breathe out, inch, rinse and repeat. Eventually I made it through the connection and found a small aven to sit up in and turn around. Even better, I found a rusted metal plate I was able to scrape at the gravel with. With Toby working on one side of the connection, and me shoveling the other, we slowly made it bigger. Having made my side sufficiently large to accommodate Toby Thiccroft, I passed the metal plate through and scouted the passage beyond. Almost instantly recognising the junction for Mecca Aven and New Oxlow my spirits soared. I returned to Toby's dig to check the progress, he'd made one attempt in vain and was digging it further. I sat waiting and heard Tan announce Jonah's arrival, he had found his torch! And in the process done the Chamber of Horrors 5 times in a single week.

After 30 minutes of labouring, Toby was able to commit to the squeeze, pushing off Jonah, who followed by pushing off Tan, who followed without even noticing which bit was "the tight bit". We were all in Oxlow. Rounding the corner we reached Mecca Aven, I checked the time, 8:45pm. "In sha'Allah we will make last orders". Glad of crawling passage that I could actually kneel up in I pounced through Pilgrim's Way with little-to-no regard for my ACLs. I found the turning for West Antechamber and spied the tacklesacks laden with our SRT kits, our tickets home. We donned them quickly and sailed down the pitch into a bone dry Oxlow. With Tan hot on my heels we climbed the pitches out, at speeds SUSS Leaders often fantasise about on cold Tuesday evening trips in November's fresher season. Pushing open the new lid, which I made a point to admire while climbing out, I exited into a mild, cloudless evening having taken 2.5hrs to cross the road via a very obscure underpass. Tan and I waited for the boys to de-rig and we shared a group hug and cheer before heading back to the car, and making last orders (actually we managed to get two rounds in, praise be upon the Peak Hotel).

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The face of joy after completing the Chamber of Horrors
 

How to do the connection

Logistics

We parked at Oxlow, rigged it and left an SRT kit per-person at the top of Pilgrim's Way. This was advised by Leo, who has done the connection twice and suffered kit snag issues when shuttling kit. In 2016 the all SRT kits made it through but not every person did, a very sad Creg had to cave back to Garlands where a group of MUSC helped him get back out of Giants.

It's probably best to do the longer walk to Giants before you do the trip, and then get changed and drive over to grab your rope from Garlands in normal clothes once you've done the trip.

Weather/water levels

The passage isn't slowly filling up, the levels we encountered this week were lower than what SUSS had in 2016 and 2018, but higher than in the 2014 video. When we went down on Sunday, there was maybe 1 inch of airspace in Duck 1. This had grown to about 2 inches on the Wednesday, because Jonah and I going back and forth through the ducks and swapping places etc had inadvertently back-bailed it into the next pool towards Poached Egg.
Direction

I'd probably say Giants to Oxlow is the best way to do it first-time. The duck at the Oxlow end (which I'm calling Duck 3) is likely to be sumped and so hard to use as an indicator of the levels of the other two. However I actually found the ducks physically easier to pass in the Oxlow -> Giants direction, but this could be because I'd just done them.

Duck 1
  • The first duck when visiting is the longest, probably just over a body length.
  • It has a consistent low airspace and can be passed with just your mouth out of the water.
  • Move slowly to avoid causing too many waves
  • Unlikely to be passable if it is sumped
  • Possible to turn round beyond Duck 1 and return head first
Duck 2

  • This is short and awkward (about half a metre)
  • The passage is slanted, so the airspace is hard to get at and can be disorienting
  • On your back, head turned to the right you can just about reach the air while your body moves leftwards with the passage
Duck 3

  • Probably fully sumped, it was sumped on the Sunday but by the time Tan came through I could see her light.
  • About 50cm long
  • If you're short, you have to have your face in the very limit of airspace and arm outstretched to reach the airspace beyond
  • Ungloved right hand to feel for airspace, on the right hand side there's a definite "crimpy jug" handhold. If that handhold is in airspace you can take a leap of faith and pull through the sumped section to get your head past your hand.
  • The passage is high enough to get your whole head out of the water beyond, you're not pulling through into another ceiling-suck
Cross-section of the ducks

Here's a quick sketch of the cross-sections of each duck, facing from Giants to Oxlow. Hopefully this helps to visualise it.

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The Oxlow Connection
  • For my money, more daunting than the CoH. This had nearly completely blocked up when I first reached it, I'm aware of maybe one group having done the through trip since SUSS in 2018, so a few winter floods had swept gravel right into the passage.
  • It's a short way beyond Five-Eighths and immediately after Oxlow Aven, which you pass under.
  • It took 30-40 mins of digging to get Toby through, who isn't enormous but is much larger than me. Definitely account for this in your callout!
  • There are scraps of metal and calcite in there to dig with. It would be significantly longer if you were just using your hands.
  • It's best tackled on your back so you don't force your face into water when you try to turn your head.
  • It feels quite committing if you haven't dug it out loads, as you have to do a prolonged breathe-out squeeze round a corner, and reversing it feels impossible.
  • Pushing off a friend really helps.
That's it from this bumper post, my aim is to de-mystify the trip a bit for those curious to attempt it. Hopefully a lot more people feel able to do the trip from now on, and keep that connection dug open! A sub 2hr trip should be possible if you don't have to dig, which makes it one of Derbyshire's finest evening trips.
 
I realise I haven't spoken about clothing - I wore a 5mm wetsuit (thinnest neoprene I have) and a hood, with an oversuit to protect it from the tight passage. This was warmer than necessary and quite restrictive, I was only cold while waiting for Toby to dig.

You can't do the ducks with your helmet on, as you need to access the airspace. A small headlight (I used a Fenix Hm50R) on the hood is best, with your helmet carried in your hand.

Tan didn't know this and just carried her light through in her hand, which she found completely fine.
 
I still remember doing the Oxlow to Giants trip in November 1971 with Chelsea Speleological Society. No one in the group had done it before and the other party doing the Giants to Oxlow route failed to find the connection so we got increasingly concerned about the route, not having met them. 7 1/2 hours emerging into a snowy landscape! Sent the Giants group into Oxlow on the Sunday to retrieve the ladders!

PS assume you meant April not May for your trip dates? If so perhaps moderator can amend and also remove this comment.
 
Incredibly quick trip time. Racing snake days are over for some of us less young folk. We can still plod on for hours though.

My favourite quote from WBT's 1966 Giants-Oxlow-Giants trip is "We were out after 9 1/4 hours, of which I can optimistically say that 2 1/2 were enjoyable". They were on 2 lead acids between three people, combat jackets, and dragging a 100ft Ulstron. Luckily they had 6 honey butties each to keep them going.
 
When I was much much younger I did all the variants of the trip, i.e., Oxlow - Giants East Canal - Oxlow, Maskhill - Giants East Canal - Maskhill and Giants - Bottom of Maskhill - Giants, but never actually did a proper through trip. All those trips were in a 4mm wetsuit jacket and trousers and a neoprene hood.

I think the last time I tried it from the Oxlow end was back in the late 80's or early 90's. We were planning to go into Giants and then back out of Oxlow. One of our team had only been caving a couple of times. Richard Greenslade went through first and after much thrashing about and horrible glooping noises he shouted through that we could follow. We all looked at each other and said, 'F--k that, we're off out'. Unfortunately Richard thought exactly the same about coming back through so he opted for hoping Garlands was rigged. It wasn't, but being an able climber he managed to free climb out.

Your excellent reports reminded me why I vowed to never do it again.
 
Great report. I looked at it just once from the Oxlow side on the same trip Mark mentions above. I was using a carbide lamp at the time and no way was I following Richard through. My memory of the first duck from that side is that there was a small airspace as you approached. However, as soon as you lowered your body into the water the level rose and the duck became a sump. A Chamber of Horrors indeed 🦆🦆🦆
 
Way back in 1974 giants hole was closed. Tom Watson and Billy Revell were blasting the passages and installing concrete floors all the way to base camp chamber.
So the only way into giants was via the oxlow connection.
We used to do the trip through on many occasions and leave the same way.
A trip to the filthy five was accomplished by bailing st vantines sump with buckets.
Digging at the top of corkscrew aven and east rift too.
All of the trips were done using electron ladders with hawsalade ropes fastend to natural belays or wooden stemples, which we abseiled down on figure of eights, to ascend we had a demmi moorhouse clog attached to an homemade chest harness clipped to willans sit harness.
Our clothing consisted of stuff purchased from the ex army stores or then a self assembly wet suit purchased from alan aldred in buxton. Carbide was defacto, knive cells, then oldam T1 lights became deriguer.
 
Really impressive! Great write up.
If I ever manage to own a 5mm wetsuit I could consider it (very unlikely). How much difference does being tall/short make? I'm thin(ish) but quite long.

If duck 3 is sumped how do the voices carry through? Or does sumped simply mean there is a airgap but it's not useable?
 
Really impressive! Great write up.
If I ever manage to own a 5mm wetsuit I could consider it (very unlikely). How much difference does being tall/short make? I'm thin(ish) but quite long.

If duck 3 is sumped how do the voices carry through? Or does sumped simply mean there is a airgap but it's not useable?
There was an air gap, but it wasn’t possible to use.

I’m quite tall and it didn’t make any difference (about 6”2).
 
Really impressive! Great write up.
If I ever manage to own a 5mm wetsuit I could consider it (very unlikely). How much difference does being tall/short make? I'm thin(ish) but quite long.

If duck 3 is sumped how do the voices carry through? Or does sumped simply mean there is a airgap but it's not useable?
There's also air gaps over the top.
 
The entrance to Giants was blasted through in 1967, some clandestine trips were made at night crawling under the gate.
On one such trip with George Cooper we did a bit of blasting at magins rift.
 
Way back in 1974 giants hole was closed. Tom Watson and Billy Revell were blasting the passages and installing concrete floors all the way to base camp chamber.
So the only way into giants was via the oxlow connection.
We used to do the trip through on many occasions and leave the same way.
A trip to the filthy five was accomplished by bailing st vantines sump with buckets.
Digging at the top of corkscrew aven and east rift too.
All of the trips were done using electron ladders with hawsalade ropes fastend to natural belays or wooden stemples, which we abseiled down on figure of eights, to ascend we had a demmi moorhouse clog attached to an homemade chest harness clipped to willans sit harness.
Our clothing consisted of stuff purchased from the ex army stores or then a self assembly wet suit purchased from alan aldred in buxton. Carbide was defacto, knive cells, then oldam T1 lights became deriguer.
Definately when men were real men.... Screw that :ROFLMAO:
 
The horrible thing about the "old" pre-blasting & connection Giant's was the Near Curtain - it was about 30m. or so down the streamway from the entrance and a flat out crawl/duck in the stream. Even in a goon suit or early wetsuit in my case the water was always perishingly cold just when you'd warmed up a bit on the way out. In those days Mrs Watson dispensed a mug of coffee (as part of the two and six (12.5p) entry fee and we were allowed a barn to change in - though ganzies often froze solid in the winter as you changed.
Then either walk to the Wanted , or Barmoor Clough, or Edale, or Hope for the public transport available then.
 
The horrible thing about the "old" pre-blasting & connection Giant's was the Near Curtain - it was about 30m. or so down the streamway from the entrance and a flat out crawl/duck in the stream. Even in a goon suit or early wetsuit in my case the water was always perishingly cold just when you'd warmed up a bit on the way out. In those days Mrs Watson dispensed a mug of coffee (as part of the two and six (12.5p) entry fee and we were allowed a barn to change in - though ganzies often froze solid in the winter as you changed.
Then either walk to the Wanted , or Barmoor Clough, or Edale, or Hope for the public transport available then.
Whenever I hear the names Watson, Giants and you Mrs Trellis, it takes me right back to the the verse in the 'Wild Caver' song and Monday nights in the Castlewood(40 years ago) ...."Cavers like you I can get any day!"😊.
 
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