Caving, or spelunking, is not an activity for the fainthearted. A term used for exploring the extremes of cave systems, the deeper you go, the less light, space, and even breathable air there is. Sounds like my worst nightmare! But imagine squeezing yourself over jagged rocks and through impossibly tight spaces in the pitch black, when all of a sudden you come across a cave lined with…crystals! Lots of crystals! Sparkling structures stretching from the cave’s floor to its ceiling, with some as long as a school bus! But, as mesmerizing as this place might look, you wouldn’t have long to marvel at its impossible beauty. Well … if you want to make it out alive, that is. Why? Let's uncover what makes this giant crystal cave one of the most deadly natural phenomenon in the world, and explore some other caverns that - despite their splendor - you should never step foot in!

Every now and then, the universe serves up some situations that seem so unlikely… so improbable… it’s almost hard to believe they actually occurred. I’m talking about the kind of unbelievable coincidences that’ll make the most logical person start to believe in fate. So, today we’ll be checking out some wild glitches in the matrix, as we explore some one-in-a-million coincidences that’ll blow your mind.

Deep in the Himalayan mountains of India, some 16,500 feet above sea level, lies a mysterious lake known as Roopkund. This remote body of water is nestled below a steep slope on one of India’s tallest mountains, and its frigid waters harbour a dark secret that’s haunted experts for decades. Just below the surface are hundreds of human skeletons! How did they get there?! What could’ve possibly caused the demise of all those people? I hope you’re not easily spooked, because it’s time to unravel the mystery of Roopkund Lake.