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Mark Twight
Mark Twight (born November 2, 1961) is an American climber, writer and the founder of Gym Jones. He rose to prominence as a mountaineer in the late 1980s and early 1990s with a series of difficult, dangerous alpine climbs in various ranges around the world. His radical, light-weight approach to
alpinism has seen him regarded as an influential figure in the single-push movement.
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