On the upcoming season premiere of 'Man vs. Wild,' actor Jake Gyllenhaal temporarily leaves Hollywood behind and joins Bear Grylls on a trek through the Iceland's harsh terrain.

In this preview, Gyllenhaal and Grylls lash themselves together with a rope as they hike on a mountain through a blinding snowstorm.

But pitfalls and hidden dangers lurk everywhere. Suddenly, as they make they way toward a rocky hill, Gyllenhaal falls through the ice and snow up to his waist.