"Edmund Viesturs" is a high-altitude mountaineer and corporate speaker. He is the only United States/American to have climbed all fourteen of the world's eight-thousander mountain peaks, and the fifth person to do so without using supplemental oxygen. He has summited peaks of over 8,000 meters on 21 occasions, including Mount Everest seven times; only two other climbers, Phurba Tashi Sherpa Mendewa and Juanito Oiarzabal, have more high-altitude ascents.

More Ed Viesturs on Wikipedia.

Chevy truck of mountaineering.

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I like things that are difficult, physically and mentally, ... Things that are really challenging, things that really maybe take a long time but really push me to my limits.

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