Bear Grylls travels the world in search of challenges to his survival skills.
Stars: Bear Grylls, Will Ferrell, Jake Gyllenhaal
Bear Grylls and actor Channing Tatum spend two days together traveling through some of the toughest terrain in California's Yosemite National Park, and when Tatum comes up against obstacles, he is determined that if Grylls can do it, he can too.
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