updated 07/05/2011 AT 1:00 PM ET
•originally published 07/07/2011 AT 7:00 AM ET
He’s lived inside a bubble, confronted an intergalactic bunny and even herded sheep in Wyoming backcountry. But as Bear Grylls’s companion on Man vs. Wild, Jake Gyllenhaal is out of his element like never before.
In an exclusive first-look at the season premiere of the Discovery Channel show, guest star Gyllenhaal joins outdoorsman Grylls on a two-day trek across Iceland. Traversing terrain dominated by mountains, glaciers and icy waters, the duo copes with some of the worst conditions known to man, all in the name of adventure.