Dan\'s Cave looks like the entrance to the underworld.
Drawn to the Deep celebrates the life of an extraordinary adventurer who braved extreme danger to share the hidd.
This is the breathtaking National Geographic cover photo taken by Wes Skiles (1958-2010), a top nature photographer who died in a diving accident before the issue was published.
Two divers swim along a luminous blue-green passage, flashlights cutting through the water, a dark mass of stalactites suspended overhead.
Dan\'s Cave looks like the entrance to the underworld