Jill Heinerth

"The big picture of survival is sometimes so hard to see," says cave diver and photographer Jill Heinerth. Her memoir is called Into the Planet. Originally broadcast Aug. 19. 2019.

Underwater explorer and photographer Jill Heinerth has dived into unmapped caves deep in the earth, and beneath a giant iceberg. She's seen hidden creatures old as dinosaurs, and witnessed scenes of surreal beauty. Her work is so dangerous, over a hundred of her friends and colleagues have died in caves. She talks about the risks and rewards of her work.