For more than 20 years, renowned cave photographer Robbie Shone has traveled to remote parts of the world to illuminate and document the world’s deepest, largest, and longest known cave systems. In 2018, he joined a team on a National Geographic expedition to Abkhazia, Georgia, to descend to the bottom of Veryovkina, the deepest known cave in the world. But when a sudden flood pulse hit, Shone and the team had to climb for their lives to escape the rapidly rising waters. Join him for a first-hand account of this gripping adventure and an inside look at the mesmerizing beauty of one of the world’s last known frontiers of exploration.