"1992: New Zealander Rob Hall pioneered the concept of commercial guiding on Everest for amateur climbers. Over the ne…"

"1996: Other commercial operators follow Rob Hall's lead, including Scott Fischer's Mountain Madness. More than 20 exp…"

"Can you just listen up? Guys? We got 2,000 feet, 600 vertical meters to Camp Four. It's roped all the way, so I know …"

"You my friends are following in the very footsteps of history..."

"Everest is another beast altogether."

"Human beings simply aren't built to function at the cruising altitude of a 747. Okay, once we get above here, above t…"

"Head down, one step at a time. That's how it is done."

"Sit down man, acclimatize."

"You know what they say, man. It's not the altitude, it's the attitude."

"Title Card: Edmund Hillary and Tenzing Norgay became the first climbers to summit Everest. Over the next 40 years, on…"