The Valley Quadfathers: Crushing Yosemite's Four Big Walls in One Day
Unknown climbers, Tanner Wanish and Michael Vaill, have taken the rock climbing world by storm, toppling the Yosemite Triple Crown record and establishing a new challenge - the Yosemite Quadruple Crown. Scaling four walls in a single day, they've raised the bar for adventure sports and redefined what's possible within a 24 hour period.
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