Blind Deep

Three thousand feet of flooded limestone. One way out. And something in the dark that hunts by the beat of your heart.When a resort developer's drill cracks open a chamber sealed for centuries beneath the jungle of the Yucatán, cave cartographer Mara Cortés is hired to map what lies beyond. What her team finds in the black water of the system they nickname Xibalbá is no fossil. It is alive—eyeless...