Krubera Cave is so deep that it has (rightfully so) earned the nickname of being the 'Everest' of all cave systems. There are many areas on earth that still remained unexplained and unexplored, such as the deepest parts of the ocean, and intricate cave systems are no different. While there's an air of mystery and intrigue to a cave such as this one, which bottoms out at a depth of 7,208 feet, t