From one of the world’s most renowned cave divers, a firsthand account of exploring the Earth’s final frontier: the hidden depths of our oceans and the sunken caves inside our planet. More people have died exploring underwater caves than climbing Mou...

Into the Planet

Taking you to places no one has ever gone before, and blending memoir, adventure, and science, Into the Planet is a riveting account of one of the most dangerous yet exhilarating pursuits in the world: diving to the center of the Earth. "If I die, it...

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