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It's 7am on December the 23rd, 2016.

In Kaibab National Forest, Arizona. It's the morning after a blizzard, and the landscape is buried beneath 8 inches of snow.

The boughs of the evergreen slump beneath heavy drifts.

Here and there, saplings peek through the blanket of white.

Running through this immense forest is a long serpentine road, a highway, which leads to one of the most famous sites on earth, the Grand Canyon.

Most of the year, traffic hums along its twin lanes, faring tourists to and fro from the iconic attraction. But not today.

Today, the road is closed for the winter.

Repeated severe snowstorms have made it impassable, and visitors are encouraged to seek alternate routes.

As a result, this ordinarily busy highway is deserted and unplowed.

There isn't a tourist for miles around, except one. In a clearing, curled, shivering beneath a pile of spruce branches,

his 46-year-old Karen Klein.

Yesterday, everything started out so normal.

She was safe and happy with her family.

Now she's deep in the forest, alone, half-frozen, and in desperate need of help.

I was exhausted. You know, I was hungry, I was tired, I was cold.

My feet, I couldn't feel my feet,

...