In May 1973, eight divers attempted a deep dive in The Shaft, a dangerous sinkhole in Mount Gambier, South Australia. The cave had a narrow entrance leading to a massive, deep underwater chamber, and its full depth was unknown at the time.

During their dive, the group pushed deeper than was safe, using only regular air instead of specialized gas mixtures. Nitrogen narcosis, poor visibility due to silt, and unexpected cloud cover confused. Some divers lost their way, with four—Christine, Gordon, Stephen, and John—never resurfacing. The survivors desperately tried to find them but had to abandon the search.

Authorities attempted multiple recovery efforts, but the extreme depth and lack of visibility made it nearly impossible. It wasn't until months later, when a film crew was shooting a documentary, that Stephen’s body was accidentally discovered at just 50 feet. Police later retrieved him, but the other three bodies were never found.

This tragedy highlighted the dangers of unregulated cave diving and led to increased safety protocols in the field.

In this gripping episode, we descend into the deepest cave on Earth—Veryovkina Cave. At an astonishing depth of 7,257 feet (2,212 m), this cave is as breathtaking as it is deadly. Join us as we uncover the harrowing story of an expedition that turned into a fight for survival when a sudden flood threatened to trap an elite team of cavers, including renowned photographers Robbie Shone and Jeff Wade.

We’ll also dive into the chilling mystery of a lone explorer whose body was discovered deep within the cave, eight months after he vanished. What drove him to embark on this solo descent, and how did he meet his tragic end?

Strap in for an episode filled with adventure, danger, and the relentless pull of the unknown beneath our feet.

Mysterious Disappearance: The Vanishing of Brian Shaffer

On the night of March 31, 2006, 27-year-old medical student Brian Shaffer went out for a night of bar hopping with friends in Columbus, Ohio. But after entering the Ugly Tuna Saloona just before closing time, Brian was never seen again. Security footage shows him reentering the bar—but never leaving.

Despite extensive investigations, countless theories, and years of searching, Brian’s disappearance remains one of the most baffling missing person cases in modern history. Did he choose to disappear? Was he a victim of foul play? Or did something even stranger happen?

Join us as we unravel the details of that fateful night, explore the theories surrounding Brian’s fate, and discuss the heartbreaking impact on his family—especially his father, who spent his final years desperately searching for answers.

Subscribe now and dive into one of the most perplexing unsolved mysteries of our time.

Four friends enter an abandoned cave, unaware of the deadly secrets lurking. They soon learn—too late—why no one dares to explore it. What starts as an adventure quickly turns into a nightmare.

Meanwhile, Donald Weltner suffers a horrific accident deep underground, in a tragedy that rivals even the infamous Nutty Putty Cave disaster of John Jones. If you thought that story was terrifying, wait until you hear this one.

These are the chilling tales of when cave exploration goes wrong.

Music by: 
CO.AG (youtube)

Reference sources:
MrDeified (youtube)

This is the story of fearless explorers who pushed the limits of adventure—but not all returned.

Ingi Már Aldan Grétarsson set out to explore Blágnípujökull, an outlet glacier of Höfsjökull in Iceland, facing the brutal forces of nature. Matthias Rimml, an Austrian mountaineer, attempted a daring solo ascent of Denali, North America's tallest and most unforgiving peak. Meanwhile, 23-year-old chemist James Mitchell ventured deep into Schroeder's Pants Cave, a labyrinth named after an unfortunate wardrobe malfunction experienced by its early explorers, Herb Schroeder and George Lyon.

These are the gripping tales of exploration, risk, and the unpredictable dangers lurking beneath the earth and above the clouds.

Two friends, Sheck Exley and Jim Bowden, embark on a daring dive into Zacatón, the world’s deepest water-filled sinkhole in the northeastern state of Tamaulipas, Mexico. But as they descend into the abyss, their expedition takes a tragic turn. This is the story of a record-breaking attempt that did not go as planned.

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