Summary
Cave diving draws explorers to otherworldly underwater mazes that can extend for hundreds of miles and contain species found nowhere else.
The stakes can be high. Veteran cave diver Jill Heinerth says equipment failure or human error can quickly turn an underwater adventure into a deadly event.
Cave systems provide crucial scientific data on Earth’s climate history and host species found nowhere else on the planet.
AI-generated summary was reviewed by a CNN editor.
The light fades as divers…