May 18, 2012

Dan's Cave, Abaco Island

Photograph by Wes C. Skiles, National Geographic

This Month in Photo of the Day: Adventure and Exploration Photos

Following the guideline her life depends on, a diver threads the needle through a stalagmite forest in Dan's Cave on Abaco Island. A single, misplaced fin kick can shatter mineral formations tens of thousands of years old.

See more pictures from the August 2010 feature story "Deep Dark Secrets."

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