Few things are more dangerous than exploring caves. For the men and women who travel into the depths of the Earth, the risks are incredible. As they squeeze through narrow pathways, climb down steep chasms, and dive into freezing subterranean waters, they play a dangerous game with their lives.
On a good day, these people are rewarded with incredible sights most will never see. On a bad one, though, the punishments are severe. In the pitch dark beneath the surface of the world, some have become lost and trapped. They’ve found themselves stuck in dark, claustrophobic spaces, making a desperate bid for survival in a real-life horror story.