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Race Against Time: Deep in Loch Ness

2025/2/6
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Hugh Williams: 作为一名经验丰富的潜水员,我对尼斯湖的潜水探险充满期待。1977年,我参与了一项考察,旨在调查声纳扫描发现的潜在古代遗址和一架二战时期的惠灵顿轰炸机残骸。虽然我对水怪的传闻持怀疑态度,但尼斯湖的神秘氛围确实让我感到一丝不安。在一次潜水过程中,我和我的潜伴遭遇了意外,我们被水下的不明物体缠住,无法上升。我感到恐惧,但努力保持冷静,权衡各种选择。我考虑过下潜寻找缠绕物、解开绳索、割断电缆或放弃装备,但每种选择都存在风险。最终,我们决定向潜水服充气以增加浮力,这个方法奏效了,我们成功脱困并安全返回水面。事后,我们发现缠住我们的是一块汽车残骸。虽然这次经历充满危险,但它也让我更加珍惜生命和周围的美好事物。多年后,我利用自己建造的遥控潜水器找到了那架惠灵顿轰炸机,完成了当年的心愿。

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It's July 1977. A bright summer's day shines across the Great Glen in the Scottish Highlands, a deep ancient valley formed during the Ice Age.

Wild, rugged mountains tower into the broad skies above. The sun glows across the greens and yellows of the steep wooded hillsides, and dances on the surface of the world's most famous lake, Loch Ness. The wind is gentle today, and the water seems calm and clear to the tourists walking and sailing along the northern shore.

But moving downwards, beneath the surface, the water quickly becomes murky and dark, stained black by the surrounding peat. In places, the immense lake drops down 750 feet, shrouded in mystery. Deep in the loch, swimming far beyond the sun's reach, 24-year-old Hugh Williams is exploring. His orange neoprene drysuit protects him from the icy temperatures.

Below 10 meters and you're in pitch darkness. And when I say pitch darkness,

It's darkness that one doesn't often come across in that you can put your fingers right up to the glass on your face mask and you won't be able to see them. It is that dark. Hugh points the torch beam through the gloom, only a few feet away. He can make out the shadowy figure of his dive partner, John. The pair are vigilant and ensure they do not drift too far apart.

A long cable and a safety rope are harnessed to Hugh and trail behind him, leading back up to the surface. At these depths, their air supply is limited. They don't want to push their luck. Hugh turns to John and gives a signal upwards. It's time to start their ascent. But as they begin to resurface, there is a sudden tug from below. Hugh is stuck.

We came to a shuddering halt, stuck in the water at maybe, at that time, maybe 45 meters or something. I knew we had very little time available to do anything. And I could feel these levels of apprehension, if not fear, starting to rise. The long cable attached to him is taut, caught on something in the darkness, as if it's been grabbed by something from below. Held fast, Hugh looks at John.

How does he free himself? He has a tiny amount of air supply left, less than 10 minutes. If he panics, he'll hyperventilate, using the oxygen more quickly. And even if he can free himself, resurfacing too quickly could also prove fatal. Hugh has a series of deadly obstacles in front of him and literal minutes to overcome them all.

Just looking down into the darkness, that made me frightened. Just thinking of having to go down to, I don't know, 60, 70, maybe 80 meters. That was really too frightening to contemplate. Ever wondered what you would do when disaster strikes? If your life depended on your next decision, could you make the right choice? Welcome to Real Survival Stories.

These are the astonishing tales of ordinary people thrown into extraordinary situations. People suddenly forced to fight for their lives. In this episode, we meet Hugh Williams, a confident, experienced diver and PhD student, well-trained in underwater technology and environments. Only 24, he's already completed scores of dives, undeterred by the UK's cold seas and wild currents.

but every dive comes with risks. One day in 1977, Hugh is exploring the eerie and enigmatic depths of Loch Ness when something pulls him down from below. Whatever has Hugh in its grip, it's not letting go. The most dangerous thing I think with diving is panic. But I mean you can feel the sort of rising fear and that's when you're aware that you've really got to keep control of this otherwise if you do lose control

a lot of those options just suddenly disappear. With time ticking away and his air supply disappearing, Hugh will have to make a series of pivotal choices. Knowing one wrong move could put him and his diving partner in greater peril or even kill them both. I'm John Hopkins. From the Noising Network, this is Real Survival Stories. It's June 1977 in Glasgow.

At Strathclyde University, the hurried footsteps of anxious students echo through the corridors. They crowd around small notice boards with the results of their recent exams. For some, it's relief and celebration. Others turn away in quiet disappointment. Hugh Williams walks past them confidently. He's older than the undergrads, nearing the end of his first year of his PhD, studying underwater navigation and surveying. He's been called to one of the lecture halls by his supervisor.

As he pulls open the heavy door, he scans the looming rows of wooden benches above him, which all stand empty. At the front of the room, three other students and two lecturers are standing around the main desk, unfolding large, unwieldy maps and documents. He's been invited to join an expedition, to help in a unique archaeological search.

A sonar survey had been done of Loch Ness and they had these pictures of the seabed where there were these circular depressions and mounds and also something that looked like a stone circle, a bit like a small version of Stonehenge. Little of the loch's bed has been mapped before now. The team is being asked to carry out a series of dives to verify, measure and plot what has been seen on the sonar surveys.

The main focus is a potential Neolithic site, which likely flooded centuries ago and is now hidden in the depths of Loch Ness. I think what we were hoping we would find is something that might have turned out to be a burial mound from Iron Age or a period of the Dark Ages. If it was a burial mound, there could be a great deal of information that could come from excavations in the future.

The team lean in, pawing over the documents, excitedly sharing what they think they can make out in the images. It's a big opportunity, the chance to follow in the footsteps of other great archaeological discoveries. Now this would be exaggerating too much, but the find of the Anglo-Saxon treasure at Sutton Hoo, at the bottom of a mound, you know, that would have been the icing on the cake. This is no simple task.

Loch Ness is vast, 23 miles long and the largest body of water in the UK by volume. It holds more fresh water than all the lakes in England and Wales combined. Recent technological developments have been starting to hint at more of its history and the secrets hidden within. But while the surveys have generated images, they are open to interpretation. The expedition needs accomplished divers to gather more evidence. Hugh is more than up for the challenge.

The plan was to do an investigation of what we could see on the sonar surveys and then do a more detailed mapping of any of the sites that were deemed to be of interest. As a boy growing up in Newcastle in the 1950s, Hugh was inspired by tales of global diving pioneers discovering hidden underwater worlds.

He watched black and white footage from Austrian biologists Hans and Lotte Haas, who helped popularize scuba diving. Meanwhile, Jacques Cousteau, a French naval officer and oceanographer, was also filming his explorations of the seabed. They were seeing, you know, the beauty of coral reefs and all the colorful fish. There were shipwrecks, sunken treasure. I mean, what's not to get excited about? But for young Hugh, it wasn't enough to simply watch others' adventures.

He wanted to get involved himself. So when I was still at school, I joined the Tyneside Subaqua Club and did a few dives with them off the Northumberland coast and at the Farne Islands and such like. I remember I made my own wetsuit with sheets of neoprene and some glue. It kept falling apart because it wasn't very well made. But there's so many new things to see and every dive is different.

Now I remember on my first snorkel dive I found an old fisherman's anchor which I managed to get back and it's still in my garage somewhere. After first snorkeling on the surface Hugh then progressed to deeper dives with breathing apparatus, delighted by what was revealed in the UK's coastal waters. Over the years I've dived with seals, dolphins, whales and you find all sorts of shipwrecks of all kinds.

There is always the excitement of not quite knowing what you're going to come across whenever you get in the water. Planning is crucial. Kit must be prepared and checked. And communication is vital. But for Hugh, the rewards certainly outweigh any risks. For me, diving was exciting.

By the 1970s, diving is a rapidly expanding field. And now, at the age of 24, Hugh has studied underwater technology for several years and is even designing equipment himself.

He's also working for the growing North Sea oil industry, carrying out surface dives and inspecting pipelines in small submarines. His fascination with the underwater world is becoming his vocation. Next up, Loch Ness, and the promise of uncovering some historical treasures hidden in its depths.

16 years from today, Greg Gerstner will finally land the perfect cannonball. Epic Splash. Unsuspecting friends. A work of art only possible because Greg is already meeting all these same people at AARP volunteer and community events that keep him active and involved and help make sure his happiness lives as long as he does. That's why the younger you are, the more you need AARP. Learn more at aarp.org slash local.

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It's July and term has finished. With his kit assembled, Hugh drives a battered blue Land Rover out of Glasgow, heading some 200 miles north towards Inverness. The equipment he has with him is up to date and of high quality, far more advanced than his early homemade wetsuit. Towing behind the Land Rover in a trailer is the dive boat. Hugh has been entrusted with transporting it to the lock. It's slow going under all the weight.

but the nervous excitement and expectation keeps him motoring onwards. It was going to be a fortnight. The plan was we would take the information that we had got and then we would go away, discuss it with other people and with archaeologists and decide whether it is worth going back at another time to do a more detailed investigation of these mounds and anything else that we might find.

As Hugh drives, the urban sprawl of Glasgow recedes and the splendour of rural Scotland takes over. He reaches the Highlands, the summer floral growth scattering colour across the foothills. Purple heather pokes out among the grey rocks and green slopes. Hugh takes it all in while carefully navigating the winding roads. Finally, the loch comes into view and Hugh smiles. A few minutes later he parks up, the grey-blue lake stretching out in front of him.

John had done an awful lot of diving before.

I knew that he was extremely experienced and generally when you're diving with somebody who you've never dived with before you get a pretty good idea very quickly of how far you can trust this person. It's very very easy to see if somebody is relaxed in the water and in command of what they're doing

And so I had no doubts about John's competence, his experience as a diver, and just the way he moved in the water. But Hugh and his team are the only people milling around the banks of the Loch. There are others here, carrying out research of their own. To many, Loch Ness is best known for the legendary monster.

By the late 1970s, reported sightings and grainy images claiming to capture the creature have appeared regularly over the years, leading to scientific discussion about its existence, as well as newspaper speculation and beer-fueled arguments in pubs. Now a number of believers can be found staying in caravans at various points near the lake. One serious enthusiast is an American lawyer, Robert Rines, who has a summer house on the banks of the water.

he is convinced the creature is real. He has even organized for remote automatic cameras to be placed within the lock, hoping to catch a glimpse of the elusive Nessie. Using these, he has captured underwater images of what he states could be a diamond-shaped fin belonging to the monster. They are some of the most talked about pictures to date. In 1977, the debate around Nessie is in a rather different place to where it is today.

In fact, so remarkable are Ryan's photos at this time that they've been published in the reputable scientific journal Nature. One of the most famous naturalists at the time, a gentleman called Sir Peter Scott, he was almost the David Attenborough of his day. And he got very excited by these photographs, sufficiently that he even gave the Loch Ness Monster a Latin name, Nessiteros rhombopterisque.

and tried to get the Loch Ness Monster put on the British Register of Endangered Species. Hugh and his team are staying close by and cross paths with Robert Rines and Sir Peter on several occasions. So, while we were doing this expedition,

Both of these people were up there at the same time and we had long conversations with them about the possibilities of the Loch Ness Monster and looking at these photographs. So there was a general feeling locally, particularly with these two gentlemen, that the monster did exist. Hugh isn't so convinced himself. But immersed in the atmospheric environs of the loch, there's always room for tiny seeds of doubt.

I didn't really believe at the time. However, these conversations and the possibility of the monster actually existing somehow just gets filed away in the back of your mind and you're not even aware that it's there until you go in the water. Over the next few days, Hugh, John and their crew start to map the sites, diving down and placing equipment on the lock bed.

Then, one day, they decided to pause the search for the possible ancient burial mounds and investigate something else instead. The sonar surveys have also raised suggestions of another historic ruin: the wreckage of a World War II Wellington bomber. The twin-engine aircraft was designed in the 1930s and saw service throughout the Second World War.

The locals knew all about this in 1940. This aircraft had crashed into the Loch, so we were pretty certain that it was a Wellington bomber. And you could even see it had the right number of engines and it was about the right size. And we all thought, well, this would be quite an interesting addition to our expedition if we could find the Wellington bomber, because again, we knew that nobody had ever been down and dived it before.

The crew have risen early. They head out on their small boat and anchor it to a shallow shelf on the side of the lock. Below is a steep underwater slope, covered in silt. The sonar surveys suggest the wreck of the bomber is in this area, and they're hoping the slope leads down to it. But they're going in blind, unsure of its exact depth. For Hugh and John, their only link to the surface will be the safety rope connecting them with their crew in the boat. Hugh peers into the dark waters below,

swishing his hand through the surface, feeling the temperature as if somehow trying to get an instinct for what might be revealed today. The water tends to be very, very clear, but it is stained by the peat. So it's almost like incredibly weak tea. It has a slight brownish tinge to it. It's a dye. It doesn't have much particles in it, so the visibility tends to be very good.

But what happens is, very quickly as you go down, this dye sucks all the light out of the water. The visibility at the surface is very good, but the moment you get down to 10 meters, it is almost pitch black. From below, it's like being in a cathedral after dark, with moonlight shining through a stained glass window, only just revealing the surroundings. It also becomes incredibly cold.

As a result, they have opted not to wear wetsuits but slightly warmer drysuits, made of spongy neoprene, sealed at the wrists and neck and covering the entire body. They can add air to their suits through a tube or remove it through a valve to help with descent. The fins on their feet, while clumsy on land, make them graceful when submerged. Because of the darkness, John and Hugh need to take a lamp with them into the depths.

But this lamp is powered in a way that would almost certainly fall short of any modern risk assessment. We had a mains generator that was running on the surface and this was putting out 240 volts. From the generator we then had a cable which was several hundred feet long which was attached to the lamp and the cable itself was also attached to a rope.

We tied the rope to the harness on my tank and before going in the water, we turned the generator on, checked the lamp was giving us light, everything was working okay. The safety rope attached to Hugh is to be held and tendered by a member of the crew in the boat. It gives them a rudimentary means of communication through a system of pulls. So if the diver is swimming away,

The tender should be able to feel that and just lay enough rope out but should still be able to feel the movement of the diver at the end. And then if he feels the rope is slack and he can't feel the diver, he should pull a little bit of the rope in. The team have made their calculations. They plan to dive to a depth of 50 meters, around 160 feet, in the hope of spotting the wreckage.

With the equipment they're using, it's deemed to be a very deep dive and air supply will be limited. The tanks were a lot smaller in those days. So on the surface with the sort of tanks that we were using, one might expect to get maybe an hour in the water. Now, if you double the pressure, which you do at 10 meters, you're basically using twice as much air. So you use it twice as quickly.

So at sort of 50, 60 meters, we might be only expecting to get 10 minutes of supply of air from the tank. Not a lot of time to explore and then resurface safely. And running out of air is just one of the risks. Another danger is nitrogen narcosis or NARCS, otherwise known as the rapture of the deep.

This is caused by the inert gas that you're breathing, which is the nitrogen component in the air. It has an effect on the brain. And the deeper you go, the more this effect becomes apparent. And if you go deep enough, it's like being drunk. And so it takes away, to a certain extent, your ability to think clearly. The narcs can amplify any nervousness and lead to paranoia.

to the conviction that there is extreme danger all around. In a setting like Loch Ness, with so many unknowns and speculative stories, this would be a major issue. Because people are no longer thinking clearly, they're not looking at how much air they have in their bottle, they might run out of air. Some people even be known to take their mouthpieces out and offer them to passing fish as they go by.

John and Hugh complete their body checks, drop into the water, and swim out to the shallows. They fit their masks firmly to their faces, releasing some air from their suits through the dump valve. They descend gradually to 10 meters. The surface clarity starts to be swallowed by the gloom. 20 meters. They're now in complete darkness. The lamp casts a narrow beam of light. The cable and rope trail behind. They link back to the boat. 30 meters.

We were both quite excited that we were going to see this untouched wreck of the Wellington bomber.

And we got to 50 meters and because we had a very powerful torch, we could actually see quite a long way with the lamp. Hugh angles the light around slowly in the hope of illuminating some sign of the bomber, but it's extremely gloomy. There's barely any sign of fish or marine life, just an opaque void all around. John swims further away and Hugh peers around, trying to decipher if the vague, dark bumps in the water might be a propeller or a motor.

The plane has been submerged for nearly 40 years, so could be totally obscured by the buildup of mud. He swims back and forth, concentrating intensely, squinting his eyes, trying to ensure he doesn't miss a clue. So we could maybe see down another 10, 15 meters or something like that, and we couldn't see any sign of either the bomber or the slope getting any more gradual. It seems the bomber is likely to be much deeper than they'd hoped.

With their air supplies rapidly diminishing, the men are resigned to disappointment. It's time to call it a day. We knew the deepest part of the loch is well over 200 meters, which is way outside of the range of any sort of air diving that we were doing. And at that point, it became pretty apparent that we weren't going to find the bomber. And we made the decision that we should come back up.

The men signal a thumbs up to each other and start their ascent. Gradually they begin to rise through the inky water. Everything appears to be going smoothly. But then, quite suddenly, there is a major problem. Hugh feels a violent jolt and his progress is abruptly halted. He cannot ascend any further. Something is holding him in stasis. We must have come up five, six meters or so.

And then we just stopped. We came to a shuddering halt. He looks below and sees the long cable attached to his harness descending downwards into the black. It's pulled tight, caught on something in the bowels of Loch Ness. And then Hugh starts to feel a tug.

Once we stopped, I got pulled in towards this steep slope which was covered in very, very fine silt. So very quickly, the visibility went to almost zero. As he collides with the slope, an explosion of mud and pebbles engulfs Hugh. He is disorientated, blinded, flailing. He tries to paddle back away from the slope. Can John still see him? Or is he now lost from view entirely?

Suddenly, in the confusion, an arm appears through the cloud and grips onto Hugh's harness. He turns and locks eyes with John, now just a few inches away. The visibility is worse than ever, but even so, Hugh can make out the concern on his dive partner's face. It's time to compose themselves to ensure they do not panic. The key thing when you're diving is to always be in mental control.

and have the mental ability to cope if something unexpected happens. And if you lose that, then what can be a small or slightly difficult situation can soon descend into one that becomes a major emergency. First things first, Hugh steadies his breathing and takes stock of the situation. It seems their rudimentary system of rope pulls to communicate with the surface has led to some confusion.

The young, inexperienced tender on board has misinterpreted something, letting out too much line and allowing it to drape dangerously below the divers. What had happened was on the surface, the cable that we'd been using was actually heavy in the water. So the tender at the surface had mistaken the weight of the cable for me pulling on the end of the cable and wanting more.

So what he did is he just paid the cable out until there was no more to be paid out. But all I could see was the cable tight going down into the depths of the lock. My first thought was, well, you know, too much cable must have been paid out and the rope in the cable has got snagged around a rock. Perhaps if Hugh and John swim away from the slope, whatever is pinning down the cable will become dislodged.

They swim down a few meters, attempting to release the rope. Then they flick their fins and try to push away. But after a few attempts to move, it quickly becomes apparent that Hugh is going nowhere. The line remains tight. At this point, there's no denying the men are in serious trouble. John, too, now seems to fully understand the gravity of the situation. They have no idea how deep down the cable goes, and they don't actually know what it's caught on. The otherworldly waters of Loch Ness

have a way of messing with the mind. I suppose what it does, even though you're not aware of it at the time, it heightens your senses for the unexpected. Even though you're not thinking, "Oh, any moment I might see the Loch Ness Monster." But somehow all the talk about it puts you slightly more on edge than you would have been if you'd been diving somewhere else. I knew we had very little time available to do anything.

And I could feel these levels of apprehension, if not fear, starting to rise.

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Hugh and John remain stuck, 160 feet below the surface of Loch Ness. While they cannot speak to each other, the men attempt to communicate via hand signals and eye contact. What do they do here? They have to make some choices, fast.

The most dangerous thing that can happen to you when you're diving is panic or making the wrong decision. You have to be aware of the situation that you're in, otherwise if you lose control, a lot of those options just suddenly disappear and you do the first thing that comes into your head, if you like. Hugh quickly weighs up his various options.

One of the options was to swim down and try and find out where the rope and the cable is tangled, untangle it and then go back up. But the problem there was we didn't know how deep that might be. And all the time we're using air and we only had a few minutes. So that in itself could have been very dangerous and I have to

To admit, just looking down into the darkness, I didn't like that idea. That made me frightened. Just thinking of having to go down to, I don't know, 60, 70, maybe 80 meters was really too frightening to contemplate. Next thought. Hugh could try to release himself from the cable by unknotting it from his harness. I knew it went underneath my harness and then it was tied on.

But because you have such a poor field of vision through the face mask, I couldn't see any of that. So I really didn't have a good handle on how it was attached. Keep thinking. Option three, a quick but particularly high-risk move. One way out would have been to cut the cable because I had a very sharp diving knife. But that would probably have electrocuted both of us.

because electricity underwater is extremely dangerous and 240 volts would probably have killed a pair of us. Deep breath, stay calm. What else? Next idea, dump his breathing apparatus. The other option was to take all the equipment off, the harness, the tank, and just leave everything and try and make a free ascent from 45 meters, which again didn't appeal at the time.

This would mean sharing John's air supply, and it's hard to know if he'd even have enough to get them both to the surface. Plus, hurrying back up too quickly could be lethal in itself, leading to decompression sickness, also known as the bends. What happens is the gases that you're breathing become dissolved in your blood and your body tissues. It's commonly described as when you take the top off a

lemonade or a coke bottle, suddenly the bubbles will appear. And it's exactly the same thing with decompression sickness. If you come up too quickly and there's enough gas that's been dissolved in the blood and the tissues, it will come out as bubbles. And this can lead to, as well as excruciating pain, it can block the blood vessels and in the worst cases it can lead to death. Having ticked every other option off the list, Hugh is left with a single choice.

But this plan is outlandish to say the least, because it involves very quickly using up a significant amount of his remaining air supply, its make or break. I remember thinking this is pretty serious. This is not good. And then there is, if you like, there's a sort of plateau of fear that you have to cope with and to work out what to do. It may not be the perfect solution, but it's taking you in the right direction. Hugh and John look at each other.

The dark water of the loch bubbles menacingly around them. Wordlessly, Hugh shows his dive partner what he now wants to do. It's a big swing, but John follows suit. So the pair of us just started to put air into our suits to see if we could just get any movement at all. And lucky actually that we had dry suits because the dry suit enables you to put a lot of air and get a lot of buoyancy.

Via an inlet valve and the hose connection from his tank, Hugh is able to feed air into his suit. He then closes the valve to trap it. John does the same. It's an ingenious move, suddenly giving them far greater upward momentum. The divers' suits balloon until they resemble Michelin men bobbing in the water. John grips onto Hugh tightly, combining their buoyancy and giving them greater upward push.

The cable strains as an epic underwater tug-of-war ensues. It's all incredibly precarious. They need to move gently upwards without snapping the cable, or they risk electrocution or flying up towards the surface too rapidly. If suddenly we were released, we would be heading towards the surface at far too great a speed, which has its own dangers.

As well as decompression sickness, there's a danger of a burst lung if the air inside your lungs expands too quickly. The men give a trusting nod to one another in anticipation, but nothing seems to be happening. Their suits are fully inflated, almost creaking under the pressure. A few tiny bubbles start to creep out from the seals at their necks and wrists. Hugh checks his depth gauge. Its little needle remains unmoving, fixed.

The worst moment was that first moment, that first minute or two when you're stuck and you're not going anywhere. The seconds race by with so much air going into their suits. They must have a tiny amount of breathing time left. They have to start moving upwards. Hugh looks again at the depth gauge. Still nothing. And then finally he sees the needle move. It's small, slight, but unmistakable.

they are ascending. Once we started to come up, then a lot of the danger, if you like, the fear starts to go away. As long as you keep coming up, things are looking better all the time. The moment that the actions that you've taken start to go in your direction, then that burden starts to be released. Hugh has made the right choice.

With the cable still dragging behind them, the two men rise incrementally through the water, safely making their way towards the sunlight. It's a gradual process until I can remember once you start being able to see the light on the surface. Once you start to be able to see the surface in front of you and you're still coming up quite slowly, you say, yeah, I'm going to make it.

As they break the surface, the dark mire dissipates and the brightness of the summer sun glows around the highland landscape. So brilliant, it dazzles them both. It's just huge relief. You realize it's over and it's just marvelous. It's wonderful. Just seeing the sunlight, the fresh air. I know you've made it. The men look around to get their bearings. Spotting the boat crew about 80 feet away, they shout to pull them in.

They're still too weighted down to swim, still entangled on something below, which they've dragged upwards with them. With clearer waters now around him, Hugh looks down. What he sees is truly unexpected. All of a sudden I could see this large bit of scrap metal hanging off the cable.

It was definitely part of a chassis member of an old car. I hesitate to think how much it weighed. I don't know, 50, 60 kilos, maybe more. It still had bits of the suspension hanging off it. Suddenly, the rust-speckled car part dislodges and disappears into the depths again. Why it was down there is just another of Loch Ness' mysteries.

With the weight gone, the men release the air from their suits and swim towards the approaching boat. The crew haul them on board, busy with questions. What exactly happened down there? The whole ordeal has been and gone in a matter of minutes. Still stunned by what's just happened, Hugh takes himself off for a quiet moment. He heads to the front of the boat alone, in silence, and lights a cigarette. He sits there, taking in the beauty of the highlands all around him. Suddenly, there's a sense of calm.

The verdant hills glow against the enormous Scottish sky. I think it enhances the senses. It makes you appreciate more what you see around you. That's how I felt about it. And thinking this is a really lovely day at Loch Ness, sun shining and it's very nice to be here. There's a feeling of how good it is to be alive.

Welcome to the White Lotus in Thailand, Kat. It's a wellness center. You should get a facial. The lady in the airport thought you were my dad.

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Buy five quarts of Castrol Edge full synthetic motor oil and get a $15 gift card after rebate, plus two times points at O'Reilly Auto Parts. In the hours and days following the dive, Hugh and the team take stock of what has happened. While it's clear mistakes were made, there's no finger pointing.

No specific blame is apportioned, not even to the inexperienced crew member who allowed too much of the cable into the water. We did have a quick chat about what had happened. The tender had not had any experience of tending divers before, which was a mistake on our part, really, not on his part. So we had a quick run through. There was no problem. And then we just moved on. The team has faced their own monster in the lock.

and come out of it unscathed. In fact, the incident doesn't disrupt the expedition at all. Things quickly get back to normal. It never stopped me diving. And in fact, we were in the water the following day. I don't think it changed my attitude to diving. Maybe made me a little bit more careful about preparation, particularly to say there are a few things we did wrong. Having been through something like that, it does make you a little bit more aware of the potential dangers of what you're doing.

and perhaps be a bit more careful. After several more dives in the lock, the team finally pack up their kit and leave. They didn't find the Wellington bomber, but at least they're all in one piece. Not long after his return home, Hugh decides to quit his PhD to pursue other underwater ventures, including working on deep sea remotely operated vehicles. Thanks to his involvement in this field,

He was able to return to Loch Ness, determined to find that bomber that had previously eluded him. A number of years later, I was working as an engineer and we built this remotely operated submarine vehicle called Pioneer. And we went to do trials for the ROV in Loch Ness. So one day we decided that we were going to have a search for the Wellington bomber and we found it.

And it was lying in about 70 metres of water, perfectly preserved, even to the extent that the tail gun was turned around and you could see the hatch where the tail gunner had escaped from the bomber and it was amazing. So a number of years later I did actually get to see the Wellington bomber. Nearly 50 years on from the dive that almost claimed his life, he was still working, still going strong.

He was literally a few breaths away from death that day in 1977. But strangely enough, looking back, he says he's almost glad it happened to him. 45 years later, I almost look back on it fondly because I think there are so many days in my life anyway where I'm doing routine things that just disappear into, you know, a mush. Whereas that's a day I'll never forget and I'll never forget the guys I was with and I don't regret it at all.

Next time, we meet Olympic gold medalist Rulon Gardner. One day in 2002, the champion wrestler finds himself in a different kind of fight, a monumental clash of man versus nature in the vast freezing mountains of Wyoming. On Valentine's Day, Rulon and two friends head out for an afternoon of snowmobiling in the wilderness of the Cowboy State. But after they lose each other, Rulon finds himself alone and under siege from the savage elements.

of daylight disappearing. And no idea where he is, he'll need every last drop of his will if he's to find his way out of this nightmare. That's next time on Real Survival Stories. Listen to Rulon's story today without waiting a week by subscribing to Noisa Plus.

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Intelligent four-wheel drive cannot prevent collisions or provide enhanced traction in all conditions. Always monitor traffic and weather conditions. Towing capacity varies by configuration. See Nissan Towing Guide and Owner's Manual for additional information. Always secure cargo. Learn more at NissanUSA.com. I'm Natalia Melman-Petrozzella, and from the BBC, this is Extreme Peak Danger. The most beautiful mountain in the world. If you die on the mountain, you stay on the mountain.

This is the story of what happened when 11 climbers died on one of the world's deadliest mountains, K2, and of the risks we'll take to feel truly alive. If I tell all the details, you won't believe it anymore. Extreme, peak danger. Listen wherever you get your podcasts.