Drawn to the Deep

National Outdoor Book Award, History/Biography CategoryDan''s Cave looks like the entrance to the underworld. Two divers swim along a luminous blue-green passage, flashlights cutting through the water, a dark mass of stalactites suspended overhead. This is the breathtaking National Geographic cover photo taken by Wes Skiles (1958–2010), a top nature photographer who died in a diving accident befo...