Inside the Everest 'Death Zone'

Camp four is the last stop before the summit. This is what people call the death zone.

In the world, there are very few human habitations above 16,000 feet because you're,

you just can't keep up. Now all of a sudden you're at 26,000 feet,

you're 10,000 feet above that level and so things are breaking down. If you cut yourself,

you don't heal very well. If you get sick, you do not get better. So you're definitely

in the zone where your body can't keep up. And on summit day, from the south col

to the summit, people are driving themselves really hard, they're typically

haven't been eating and drinking very well, they haven't been sleeping well,