Caves No One Has Ever Reached the Bottom Of (Here’s Why)

Every cave on this list has an official depth number, and every one of those numbers is a place where someone, or something, had to stop rather than the true bottom. This video works through eight of the deepest caves and flooded sinkholes on Earth, from a Greenland ice moulin to the Veryovkina Cave on the Arabika Massif, and explains why each recorded depth is a wall rather than a floor. You will learn how deep each one has been surveyed, who went down, the expeditions and robotic surveys that pushed the numbers further, and what stopped them. By the end you will understand why the record for the deepest cave on Earth is less a fixed fact than a moving target. CHAPTERS 0:00 Intro 1:37 Greenland's Moving Shafts 3:58 A Robot's Record 6:08 Rome's Bottomless Circle 8:02 Czech Flooded Depths 10:02 Mexico's Mountain Cave 11:41 The Sump Breakthrough 13:39 Caucasus Depth Record 15:30 The True Bottom TAGS deepest cave on earth, veryovkina cave, krubera voronja cave, arabika massif, sistema huautla, sistema cheve, hranicka propast, pozzo del merro, el sistema zacaton, greenland moulins, deepest flooded cave, cave diving expedition, deepest sinkhole, underground exploration, cave diving deaths, deepest caves ranked, caves no one has reached the bottom of, cave survey depth