Greg Ley was deep in the Rocky Mountains, training as an outdoor guide, when his group encountered tragedy. What happened next forever changed his beliefs about the importance of humans to the wilderness.



Hypo • thermia

Greek. Deficient heat

Nearly 1500 people will die from hypothermia this year in the U.S. It’s the #4 cause of death in the wilderness—after falling, drowning, and heart attacks.

It happens to newbies and experts alike. And it’s 100% preventable.

This guide, featuring HumaNature host Caroline Ballard, will show you the signs of hypothermia and how to treat it.

Photos and text by Erin Jones

Layout by Anna Rader

Models: Caroline Ballard, Micah Schweizer, and Anna Rader


The Center for Disease Control, Backpacker Magazine, American Alpine Institute

Featured Music

Heliograph by Chris Zabriskie is licensed under a Attribution License.

The Theatrical Poster for Poltergeist III by Chris Zabriskie is licensed under a Attribution License.

Cinematic Orchestra—Exit Music (Radiohead)

William Ackerman—Bricklayer’s Beautiful Daughter


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