How about base jumping into the world’s deepest cave shaft? Yes you’ve guessed it right I’m talking about the Cave of Swallows, a cave that is so deep that it can engulf the Empire State Building. Located in a rain-forest in San Luis Potosi, Mexico, the cave is a 400m vertical shaft and the dream destination of adrenaline junkies. It takes approximately 12 seconds to base jump from the top of the cave but believe me it’s not a sport for the faint hearted. Check out the craziest videos below. Image Credit