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Terrifying Caves You Must NEVER Go In · Be Amazed

• 0:00
  [SPEAKER_01]: Caving or spelunking is not an activity for the faint-hearted.
• 0:04
  [SPEAKER_01]: A term used for exploring the extremes of cave systems, the deeper you go, the less light space and even breathable air there is.
• 0:13
  [SPEAKER_01]: Sounds like my worst nightmare.
• 0:15
  [SPEAKER_01]: But imagine squeezing yourself over jagged rocks and threw impossibly tight spaces in the pitch black.
• 0:22
  [SPEAKER_01]: When all of a sudden you come across a cave lined with crystals, lots of crystals.
• 0:28
  [SPEAKER_01]: Sparkling structure stretching from the caves floored to its ceiling, with some as long as a school bus.
• 0:36
  [SPEAKER_01]: But as mesmerizing as this place might look, you wouldn't have longed a marvel at its impossible beauty.
• 0:43
  [SPEAKER_01]: Well, if you want to make it out alive that is, why?
• 0:46
  [SPEAKER_01]: Well, get your herd head and walkin' boots on as we uncover what makes this giant crystal cave, one of the most deadly, natural phenomenon in the world.
• 0:57
  [SPEAKER_01]: And explore some other caverns that, despite their splendor, you should never step foot in.
• 1:16
  [SPEAKER_01]: Whether it's their supposed healing powers or the way they sparkle in the light, we humans have been obsessed with crystals for as long as we can remember.
• 1:25
  [SPEAKER_01]: So back in 1910, when miners from NICO Mexico discovered a cavern with short sparkly minerals lining the walls, you can imagine their excitement.
• 1:35
  [SPEAKER_01]: They found that cave of swords, a crystal-filled cavern, some 390 feet below ground.
• 1:42
  [SPEAKER_01]: Now the miners didn't know this at the time, but Nica lies above an underground Magwan Chamber, some two or three miles below the Cave of Swords.
• 1:52
  [SPEAKER_01]: Over the course of some 500,000 years, the Magma-heated groundwater and oxygenated surface water gradually began to change the minerals in the area.
• 2:01
  [SPEAKER_01]: Then, as the temperature of the cave started to drop below 133 degrees Fahrenheit, gypsum crystals slowly began to form.
• 2:11
  [SPEAKER_01]: In the cave of swords, this temperature transition happened relatively rapidly, and today it sits at around 116 degrees Fahrenheit, meaning the crystals only had a chance to grow a little over three feet in length.
• 2:24
  [SPEAKER_01]: Still, a three-foot crystal is a pretty magnificent thing to behold, let alone a whole
• 2:31
  [SPEAKER_01]: The Cave of Swords was the prize find of Nike for 90 years.
• 2:35
  [SPEAKER_01]: Until the year 2,000 when miners were drilling a new tunnel through the 9th of fall, they delved 600 feet deeper than the cave of swords and suddenly stumbled across an even more jaw-dropping chamber.
• 2:47
  [SPEAKER_01]: The Cave of the Crystals.
• 2:49
  [SPEAKER_01]: A very inspired name there, shall we say.
• 2:52
  [SPEAKER_01]: It was completely flooded and had to be dreamed to get a better look, revealing that the walls and floors were chock-full of gigantic chipsome beams.
• 3:02
  [SPEAKER_01]: This was unbelievable.
• 3:04
  [SPEAKER_01]: Not even a year before the pulpy geode had been discovered in Spain, boasting similar gypsum crystals that reached some six feet, seven inches in length, but these were a whopping 37 feet in length, more than five times the size of those in pulpy, with the biggest of them weighing a back breaking 55 tons.
• 3:24
  [SPEAKER_01]: making them the largest natural crystals to ever be discovered, but the mass of these structures isn't the only thing stopping you from nabbing a souvenir, too.
• 3:33
  [SPEAKER_01]: The Cave of the Crystals is a sizzling 136 degrees Fahrenheit, which is the reason why these crystals have been able to grow so big and compares into those in the cooler Cave of Swords.
• 3:44
  [SPEAKER_01]: For some context though, that's hotter than the maximum temperature ever recorded on the planet's surface.
• 3:50
  [SPEAKER_01]: Okay, but pack some water in a portable fan and you're good to go right?
• 3:54
  [SPEAKER_01]: Well, not exactly.
• 3:56
  [SPEAKER_01]: This cave is a giant sweat box with humidity levels reaching 99%.
• 4:02
  [SPEAKER_01]: Because the air is so hot and humid, the coolest place in the cave would be the inside of your lungs.
• 4:08
  [SPEAKER_01]: As a result, water would condensate their effectively drowning you from the inside out.
• 4:14
  [SPEAKER_01]: Without proper protection, people can only endure 10 minutes of exposure in the cave at a time.
• 4:20
  [SPEAKER_01]: However, once mining operations in the area ceased in 2015, the cave was allowed to reef blood protecting the giant crystals within and closing it off to all researchers and visitors alike.
• 4:30
  [SPEAKER_01]: So, unless you like the idea of scuba diving in a grave, sorry, cave, 980 feet underground with almost no natural light, these incredible crystals in the depth trap they've found in are all flimits for the foreseeable future.
• 4:44
  [SPEAKER_01]: You know, it's not off limits now, following my podcast and leaving a five-star rating.
• 4:49
  [SPEAKER_01]: That way you'll never miss out on another of my amazing episodes again.
• 4:53
  [SPEAKER_01]: All done?
• 4:55
  [SPEAKER_01]: Okay, let's keep exploring.
• 4:59
  [SPEAKER_01]: So we're better to cool off than Mount Randy's ice caves and Washington, USA.
• 5:05
  [SPEAKER_01]: Ice caves like these form went temperature's rise and melt water runs through or under a glacier, leaving behind model passageways or caverns within the glacier itself.
• 5:16
  [SPEAKER_01]: That's pretty extraordinary.
• 5:18
  [SPEAKER_01]: But this isn't a place that you want to tunnel in.
• 5:21
  [SPEAKER_01]: No prizes for guessing that ice caves are really cold.
• 5:24
  [SPEAKER_01]: Typically these frozen caverns are a bit of 15 degrees Fahrenheit.
• 5:29
  [SPEAKER_01]: Now your normal body temperature is around 98.6 degrees Fahrenheit, but if it drops below just 95 degrees Fahrenheit, your body enters hypothermia.
• 5:39
  [SPEAKER_01]: This is when your heart nervous system and other organs stop functioning normally and left on treated and exposed you could be dead in a matter of minutes.
• 5:47
  [SPEAKER_01]: So staying there too long or failing to wrap up properly could be fatal.
• 5:51
  [SPEAKER_01]: Yet it turns out that chili conditions here are actually the least of your worries.
• 5:56
  [SPEAKER_01]: During the warmer months melting occurs in the Mount Rainier ice caves, and I'm not just talking about drops of water.
• 6:03
  [SPEAKER_01]: Chunks of ice, the size of small cars of fall and from the cave ceiling.
• 6:07
  [SPEAKER_01]: Even if you manage to dodge a bulky block of ice, you may still not get out of there in one piece.
• 6:13
  [SPEAKER_01]: Ice caves like the ones at Mount Rainier are prone to collapsing due to melting in the warmer summer months.
• 6:19
  [SPEAKER_01]: As recently as 2015 collapses in nearby ice caves, it claims several lives and left many badly injured.
• 6:26
  [SPEAKER_01]: Now, back down south in New Mexico, you'll find the entrance of the eighth-longest-explored cave in the world.
• 6:33
  [SPEAKER_01]: Let's Gia Cave!
• 6:35
  [SPEAKER_01]: At 150 miles long reaching 1600 and 4 feet deep, it's the second deepest explored cave in the entire U.S. And it's also considered to be the most beautiful and well-decorated cavern in the world with thousands of rare geological formations hidden within.
• 6:53
  [SPEAKER_01]: But be warned you don't want to spend too long soaking up these stunning sites because the humidity levels here can hit 100%.
• 7:02
  [SPEAKER_01]: and such human conditions when the air saturated with water are sweat can evaporate preventing us from cooling down.
• 7:10
  [SPEAKER_01]: While trekking through this super long cavern may sound like a good way to shed a few pounds, walking in such testing conditions could put you at risk of exhaustion and dehydration.
• 7:20
  [SPEAKER_01]: To make matters worse, let you geek also contains many ditches and drops with some vertical pits plummeting down a vertical inducing 300 feet.
• 7:30
  [SPEAKER_01]: For reference, falling down there would be like jumping off the statue of Liberty.
• 7:35
  [SPEAKER_01]: Something tells me that exhaustion, the pitch black and dramatic drops probably aren't the best mix.
• 7:42
  [SPEAKER_01]: It's so dangerous that the historic cave has been closed to the public, with only the most experienced explorers and researchers permitted access.
• 7:50
  [SPEAKER_01]: And even then, back in 2014, a rescue team was called to retrieve a stricken cave or volunteer who'd only descended 180 feet in the cave,
• 8:02
  [SPEAKER_01]: Yeah, I think I'm good at surface level things.
• 8:06
  [SPEAKER_01]: Dr. Whale, Iceland's League Meventen lies groat y'all cave.
• 8:12
  [SPEAKER_01]: It may not look like much from the outside, but inside this cavern is home to crystal clear bright, beautiful waters.
• 8:20
  [SPEAKER_01]: The location is so picturesque that it was even the hook-up place for chance, no, and you'd greet in the game of thrones.
• 8:28
  [SPEAKER_01]: Yet that ain't the spiciest thing about this game.
• 8:31
  [SPEAKER_01]: The stand-out feature of Grooter Gow is its warm waters, which are heated by volcanic activity deep within the earth.
• 8:39
  [SPEAKER_01]: Up until the 1970s, the cozy temperatures of Grooter Gow's water
• 8:43
  [SPEAKER_01]: made it a popular bathing site, with people flocking to the cave for some respect from the ice cold outdoors.
• 8:51
  [SPEAKER_01]: But the good times didn't last long.
• 8:54
  [SPEAKER_01]: During the 70s and 80s volcanic activity increased, raising the water to a scalding 140 degrees Fahrenheit.
• 9:02
  [SPEAKER_01]: At this temperature, just five seconds of exposure to this water could cause life-threatening third-degree burns.
• 9:09
  [SPEAKER_01]: Fortunately, the temperature of the water has since cooled down to a more comfortable 110 degrees Fahrenheit.
• 9:16
  [SPEAKER_01]: Still with the constant threat of volcanic activity unexpectedly heating the water again, taking a dip here is one heck of a high-stage gabel.
• 9:25
  [SPEAKER_01]: So if you're not looking to get boiled like a potato and advice that you think twice before stepping foot and grow your growls waters.
• 9:34
  [SPEAKER_01]: Now the Bahamas is best known for its pristine white sand beaches and heavenly waters, but it's actually underground and underwater that the scenery gets even more picturesque.
• 9:46
  [SPEAKER_01]: But neat the war pine forest of a baco island and the northern Bahamas lie a series of marine caves extending for over nine miles.
• 9:56
  [SPEAKER_01]: And it's in these caverns divers can find the glass factory.
• 10:04
  [SPEAKER_01]: The stunning crystal roses along with stalactites and stalagmites litter the ceilings and floors, which make the entire place look both impossibly beautiful and dangerous.
• 10:16
  [SPEAKER_01]: These formations all develop during the ice ages when the sea level dropped dramatically leaving the cave dry and dripping with mineral rich waters.
• 10:25
  [SPEAKER_01]: Gradually, these mineral deposits built up into the structures lining the ceilings and floors of the glass factory today.
• 10:32
  [SPEAKER_01]: Now flooded, it may look like these fascinating formations are capable of dealing any clumsy divers-a-sharp stab, but it turns out that these are incredibly delicate.
• 10:42
  [SPEAKER_01]: It's not to say that there aren't other dangers lying in this watery wonder, however.
• 10:47
  [SPEAKER_01]: Suspended clouds of hydrogen sulfide can be found throughout the caves at Abacco Island.
• 10:53
  [SPEAKER_01]: Not only does hydrogen sulfide emit a smell like rotten eggs, but it's also pretty damn dangerous.
• 11:00
  [SPEAKER_01]: While divers breathe compressed air through dive tanks, hydrogen sulfide can penetrate through wetsuits and skin, leading to nausea, delirium, and even death.
• 11:10
  [SPEAKER_01]: Imagine throwing up in your snorkel before going into a state of confusion and then finally leaving this mortal coil.
• 11:17
  [SPEAKER_01]: Jeez!
• 11:18
  [SPEAKER_01]: Spectacular is the underwater caverns of a bakoile as a look, and I think I'll be sticking to the Bahamas beaches.
• 11:26
  [SPEAKER_01]: As you make your way down into Mexico's Kueva de Villa Luz, the first thing you notice are the pools of beautiful turquoise water, looks pretty inviting, until you learn that terrifying truth about this place.
• 11:40
  [SPEAKER_01]: The cloudy tinge in the water isn't the work of an overpriced bath Bob.
• 11:49
  [SPEAKER_01]: But unlike the pockets of it found in the aboco islands, this gas isn't just in the cave's water, it permeates the air too.
• 11:57
  [SPEAKER_01]: As I've said, swimming through hydrogen sulfide can get ugly, but it's presence in the atmosphere is just as dangerous.
• 12:04
  [SPEAKER_01]: All it takes is 5 hydrogen sulfide particles per million are ppm to lead to nausea and breathing problems.
• 12:12
  [SPEAKER_01]: Yet the concentration of hydrogen sulfide and Kueva Davila loose can reach a dizzying 210 BBM.
• 12:18
  [SPEAKER_01]: At these levels, explorers can expect severe conjunctivitis irritation to their respiratory tract, as well as pulmonary edema, which are potentially fatal buildups of fluid in the lungs.
• 12:32
  [SPEAKER_01]: And just in case that wasn't enough, indigenous, so-coup people conduct an annual religious ceremony here, which turns Kueba Davila loose into an even bigger death trap.
• 12:44
  [SPEAKER_01]: Each year, they throw the ground up paste of the barboscow root, known as Orotanon, into the water.
• 12:51
  [SPEAKER_01]: Rotanon, which is a toxic compound, kills the fish that live in the cave's water.
• 12:56
  [SPEAKER_01]: But it's not just Nemo who needs to watch out for this perilous paste as humans too can feel the effects of this stuff.
• 13:04
  [SPEAKER_01]: In gestion of a rotanone can cause inflammation to the throat, gastric pain, vomiting, and continents and even seizures.
• 13:12
  [SPEAKER_01]: So unless you want to be so leaping with the fishes, I'd give Kueva Davila Luzamis.
• 13:18
  [SPEAKER_01]: Next up underneath Russia's Earl Mountain lies Orta Cave.
• 13:23
  [SPEAKER_01]: A place that looks more like a swimming pool in a luxury spa resort than a cavern.
• 13:28
  [SPEAKER_01]: But this all-natural gem really does exist.
• 13:31
  [SPEAKER_01]: The waters of Orta Cave are kept crystal clear thanks to the gypsum materials that the caverns made out of.
• 13:37
  [SPEAKER_01]: Essentially gypsum attracts clay particles to gather to form clumps known as flock ghouls.
• 13:43
  [SPEAKER_01]: When these floccules get large enough, they eventually increase in weight and sink to the bottom of the water.
• 13:49
  [SPEAKER_01]: As a result, divers in the cave are able to see over 150 feet in front of them.
• 13:55
  [SPEAKER_01]: Sounds like these are idyllic conditions to take a quick swim in.
• 13:58
  [SPEAKER_01]: But that would be too easy, wasn't it?
• 14:02
  [SPEAKER_01]: That order cave, the water temperature drops down to a bone-shilling 40 degrees Fahrenheit.
• 14:08
  [SPEAKER_01]: Unsurprisingly, the only way to survive a dip here is by wearing a wet suit.
• 14:13
  [SPEAKER_01]: Without it, just five minutes in this wintery water will lead to a loss of dexterity.
• 14:18
  [SPEAKER_01]: 25 minutes later, you're likely to lose consciousness.
• 14:22
  [SPEAKER_01]: Any longer, and you'll face a frozen finish.
• 14:26
  [SPEAKER_01]: The waters of order cave aren't only home to freezing temperatures, however, some divers have claimed they've seen a maiden in a white gown known as the Lady of the Cave floating in the waters.
• 14:36
  [SPEAKER_01]: Hunting as that image is, she said to protect in guide divers that enter the perilous cavern.
• 14:43
  [SPEAKER_01]: The Lady of the Cave hasn't saved everyone though, the freezing waters of water have apparently claimed the lies of around 300 divers throughout the years.
• 14:53
  [SPEAKER_01]: Gee, you'd have thought trusting a mysterious floating underwater figure with your life could lead to a bad ending.
• 15:00
  [SPEAKER_01]: In 1938, a farmer in South Australia stumbled across a one-foot-wide hole in his field, but this wasn't the bird home of a rabbit or a badger, it turned out to be the opening to the shaft, a giant underground cave stretching down far far below.
• 15:15
  [SPEAKER_01]: While the way into this place looked small, the main chamber was anything but.
• 15:20
  [SPEAKER_01]: and all the colossal cavern stretched out some 460 feet.
• 15:26
  [SPEAKER_01]: Tell, and one more thing.
• 15:27
  [SPEAKER_01]: It's underwater, so to explore it anyone brave enough needs a wed suit.
• 15:31
  [SPEAKER_01]: Syncles like this exist all over Australia with some, like the nearby Killsby Synco, big enough to explore Scuba Style.
• 15:39
  [SPEAKER_01]: The shaft is the side of a truly terrifying tail.
• 15:43
  [SPEAKER_01]: Back in May 1973, 8-Diver set about exploring this submerged gavron.
• 15:49
  [SPEAKER_01]: Everything was going to plan until the divers left the Sunlit Chamber and stumbled upon a side down to all.
• 15:55
  [SPEAKER_01]: At this point they were at depths where the effects of Nitrogen Narcosis could be felt, somewhere between 100 feet and 300 feet.
• 16:03
  [SPEAKER_01]: Nitrogen is a major part of the air we normally breathe, but when divers descend into deeper water, the pressure of the Nitrogen leads to more of its particles getting absorbed into the bloodstream.
• 16:14
  [SPEAKER_01]: and the higher the nitrogen concentration in the bloodstream, the slower the nervous system becomes.
• 16:20
  [SPEAKER_01]: As a result, sufferers of nitrogen Narcosis experience intoxicating effects like confusion and disorientation.
• 16:27
  [SPEAKER_01]: Luckily, some of the more experienced divers recognize their nitrogen Narcosis symptoms and return to the surface.
• 16:34
  [SPEAKER_01]: However, four still remain deep underwater.
• 16:37
  [SPEAKER_01]: To make matters worse, they disturb the silt sediment in the side tunnel of scuring their vision completely.
• 16:43
  [SPEAKER_01]: Imagine that.
• 16:45
  [SPEAKER_01]: Not only are you delirious, someone 100 feet underwater, but you also can't see anything around you.
• 16:51
  [SPEAKER_01]: Practically blind and with the ever-increasing effects of nitrogen and arcosis, the four remaining divers sadly never made it back out of the shaft.
• 17:00
  [SPEAKER_01]: Killsby's sinkhole is no better, having claimed some 12 lives in similar accidents from 1969 onwards.
• 17:08
  [SPEAKER_01]: So no matter how enticing those sinkhole waters may look, stay out of those holes.
• 17:14
  [SPEAKER_01]: Next up, it's easy to get lost in the rolling hills of a very picturesque part of Utah, however peaceful as this place seems to be, it's actually the side of one of the world's deadliest caves.
• 17:25
  [SPEAKER_01]: This hellhole called nutty-body contains some 1,400 feet of shoots and crazily claustrophobic tunnels.
• 17:34
  [SPEAKER_01]: Nope, nope, nope, nope, nope, that's 100% nope for me.
• 17:38
  [SPEAKER_01]: For some reason, hardened cavers are relish crawling through those teeny tiny spaces.
• 17:44
  [SPEAKER_01]: One such explorer by the name of John Jones did exactly that in November 2009.
• 17:49
  [SPEAKER_01]: About an hour into the expedition, John attempted to crawl headfirst through a tight passage in the cave, squirming forward with his hip stomach and fingers.
• 17:58
  [SPEAKER_01]: But suddenly John realized that he'd gone too far.
• 18:02
  [SPEAKER_01]: He was upside down and stuck, with no room to turn around.
• 18:08
  [SPEAKER_01]: Oh, and all of this was happening almost 400 feet from the cave's entrance.
• 18:13
  [SPEAKER_01]: Completely trapped John tried to keep moving forward.
• 18:16
  [SPEAKER_01]: He ex-held allowing his flat and chest to fit slightly further down the tunnel, but when John inhaled again, his chest expanded and now he was even more firmly wedged.
• 18:26
  [SPEAKER_01]: Luckily, John's brother, who was with him, came across his trapped sibling and caught rescue teams for help.
• 18:32
  [SPEAKER_01]: Workers tried to pull John's out legs first, using a rope and pulley system.
• 18:37
  [SPEAKER_01]: Slowly the rescue workers began to draw John out of the tight passage, but then disaster struck.
• 18:43
  [SPEAKER_01]: An equipment failure plunged John back into where he'd been trapped, and now he was even more stuck.
• 18:49
  [SPEAKER_01]: Despite continuous efforts by the rescue workers, John soon became unresponsive.
• 18:55
  [SPEAKER_01]: After more than 24 hours upside down and which between the smallest of gaps, the pressure on John's body became too much.
• 19:03
  [SPEAKER_01]: Sadly John didn't make it.
• 19:05
  [SPEAKER_01]: And even after his passing, the mission to retrieve John's body was deemed too dangerous.
• 19:10
  [SPEAKER_01]: So a decision was made to make the cave a resting place for John.
• 19:15
  [SPEAKER_01]: Nowadays, that he's completely closed off and the memorial dedicated to John John serves as a reminder of just how lethal this cave is.
• 19:24
  [SPEAKER_01]: Okay, my claustrophobia is attacking now, just by thinking about anybody, so I'll distract myself picturing a beautiful, open-air set with a nice little river.
• 19:32
  [SPEAKER_01]: There's something super peaceful about a gently flowing river, isn't there?
• 19:36
  [SPEAKER_01]: Well, most of the time.
• 19:39
  [SPEAKER_01]: One rather peaceful looking body of water is also the entrance to the deceptively dangerous little-neath river cave.
• 19:47
  [SPEAKER_01]: The cavern found in South Wales has become a popular exploration spot with experience caveers.
• 19:54
  [SPEAKER_01]: To get through the entrance alone, caveers have to crawl on their hands and knees on the riverbed.
• 19:59
  [SPEAKER_01]: before entering the cavern through a gap that's barely wide enough for a person to fit through.
• 20:04
  [SPEAKER_01]: And it's not just the entrance that's a tight squeeze.
• 20:08
  [SPEAKER_01]: Some of the passageways in this cave are so confined that caveers have to remove their helmets in order to fit through.
• 20:14
  [SPEAKER_01]: But getting stuck in a little neether river cave isn't the only thing that explores have to watch out for.
• 20:20
  [SPEAKER_01]: It's also prone to...
• 20:23
  [SPEAKER_01]: flooding.
• 20:25
  [SPEAKER_01]: If there's a sudden surge of rain.
• 20:27
  [SPEAKER_01]: Can you imagine the turmoil of struggling to squeeze through the tight gaps of this cavern and then all of a sudden you're up to your neck and water?
• 20:36
  [SPEAKER_01]: That wasn't terrifying enough, cavers have to navigate a 500-foot-long passage with the ceiling so low, they must crawl along on their hands and knees, while they're almost completely submerged in water.
• 20:48
  [SPEAKER_01]: Those brave enough to take a little neat river cave are at least rewarded by the incredible calcide formations that this cave has to offer.
• 20:56
  [SPEAKER_01]: Who is that looks?
• 20:57
  [SPEAKER_01]: There's no way you'll see me crawling along or reverber bad to catch a glimpse of it.
• 21:01
  [SPEAKER_01]: Now, located in Apkasia, Georgia, Crubara Cave is deep, so deep that it's known as the Everest of Caves, with the deepest explored point laying around 7,215 feet below.
• 21:16
  [SPEAKER_01]: Okay, that's around a quarter of the height of Everest, but it's still about the same as 5 Empire State Building stacked on top of one another, and all a descent down this colossal cave system at back up can take an eye-watering two weeks.
• 21:30
  [SPEAKER_01]: It is a terrifying winding what series of passages that seems that never end, with some sections so flooded that diving equipment has to be used to move on.
• 21:40
  [SPEAKER_01]: Luckily, crewbearers isn't just a straight drop down, but that doesn't mean you can do some damage with the fall.
• 21:47
  [SPEAKER_01]: One particular pet known as the big cascade plunges down almost 500 feet.
• 21:53
  [SPEAKER_01]: Imagine stumbling across that in the dark.
• 21:56
  [SPEAKER_01]: Tierifying is that sound, some caves possess even deadlier vertical drops, usually caused by erosion from powerful underground waterfalls over thousands of years.
• 22:06
  [SPEAKER_01]: Inside Georgia's Ellison Cave is fantastic pit, a shamp-dropping straight down a stomach turning 586 feet.
• 22:15
  [SPEAKER_01]: If you took a misstep and fell down this hello, it would effectively be like jumping off Canada's Space Needle.
• 22:21
  [SPEAKER_01]: It doesn't sound so fantastic to me.
• 22:23
  [SPEAKER_01]: If that doesn't give you a vertigo, this next place certainly will.
• 22:28
  [SPEAKER_01]: The Meow King shaft and Tian Xing China descends down a skin crawling 1,660 feet, making it the deepest unbroken vertical shaft in the entire world.
• 22:41
  [SPEAKER_01]: If you were to stumble down this sizeable shaft, you'd be falling for over 10 seconds.
• 22:46
  [SPEAKER_01]: All the other hand, there are gorgeous caverns to view from the bottom, it's just the kidding to the bottom bit that scares me.
• 22:54
  [SPEAKER_01]: Now let's head to Africa for our last cave entry, with lush green vegetation surrounding it and a wonderful streaming over its entrance, Kitterm Cave and Mount Elgon National Park Kenya, wouldn't look out of place in a holiday brochure.
• 23:09
  [SPEAKER_01]: But picture-askers this scene looks, Kedom Cave holds some sinister secrets that make it one of the world's deadliest caves.
• 23:18
  [SPEAKER_01]: For centuries, elephants have ventured into the cave to scrape away at the cavern's sawbridge walls.
• 23:24
  [SPEAKER_01]: I'm sure being an elephant in a cave would be a once in a lifetime experience, but with these burly beast flattening around 500 humans a year, I wouldn't be too keen on stumbling across one and a dark avart.
• 23:37
  [SPEAKER_01]: But for some, the risk of an elephant end wasn't enough to put them off visiting this place.
• 23:42
  [SPEAKER_01]: In 1980, Charles Monet went exploring deep into Kedom Cave.
• 23:47
  [SPEAKER_01]: While he wasn't struck down by an angry animal, this cavern hadn't even nested your surprise in store for him.
• 23:54
  [SPEAKER_01]: After he'd finished exploring Monet left Getham Cave and returned home.
• 23:58
  [SPEAKER_01]: So, after his excursion Monet came down with an excruciating headache, fever, nausea, and vomiting, quickly set end.
• 24:06
  [SPEAKER_01]: Borsing him to visit Nairobi Hospital.
• 24:09
  [SPEAKER_01]: Not long after his vomit was black and flew its leak from every orifice in his body.
• 24:15
  [SPEAKER_01]: Sadly, it all became too much and Monet crossed a great divide.
• 24:19
  [SPEAKER_01]: Seven years later, a young Danish boy was admitted to Nairobi Hospital with the exact symptoms that Monet experienced.
• 24:26
  [SPEAKER_01]: So what did the two of them have in common?
• 24:29
  [SPEAKER_01]: They both visited Kiddem Cave.
• 24:32
  [SPEAKER_01]: A research investigation was launched to find what and the cave was the source of the men's demise.
• 24:37
  [SPEAKER_01]: Turns out, it was Bat Poo.
• 24:40
  [SPEAKER_01]: Yep, he heard that right, the excrement of Egyptian fruit-bats deep inside the cave was found to contain more burg virus.
• 24:48
  [SPEAKER_01]: A virulent disease that causes the gruesome symptoms seen in the two men.
• 24:54
  [SPEAKER_01]: In fact, it's so deadly that the average case fatality rate is 50%.
• 24:57
  [SPEAKER_01]: Man, what are those bats eating?
• 25:01
  [SPEAKER_01]: The elephants are no way I think that's enough reason to give
• 25:07
  [SPEAKER_01]: Which of these incredible caves scared you the most?
• 25:11
  [SPEAKER_01]: And are there any others that you know of that we should probably avoid?
• 25:14
  [SPEAKER_01]: Thanks for listening and I'll see you next time you'll want to be amazed.