National Geographic Daily News

Snorkeler, Mexico

Photograph by Paul Nicklen

A snorkeling tourist floats in a cenote called Las Calaveras—“the skulls”—near Tulum. Local Maya got their drinking water here until about 30 years ago, when divers found bones. Archaeologists have recorded the remains of more than a hundred people, usually shrouded by the water’s primordial darkness.

See more pictures from the August 2013 feature story “Secrets of the Maya Otherworld.”

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