He’s been an X-man, an Anchorman, and the tossed-aside-for-the-new-guy boyfriend in basically every romantic movie since “The Notebook.” Now, James Marsden is embarking on his greatest adventure yet: Exploring the wilderness alongside Bear Grylls.

“I’ve never done this before in my life,” warns the blue-eyed heartthrob in Zap2it’s exclusive sneak peek, as he looks down a massive mountain range that he’s about to descend.

“I think you’ll be good,” assures Grylls. “It’s the final big push.”

The breathtaking clip is from “Running Wild with Bear Grylls,” which will air Marsden’s adventure on Monday, Aug. 24 at 10 p.m. ET/PT on NBC. In Season 2 of the show, renowned survivalist Grylls is joined on 2-day adventures by stars who have included Ed Helms, Michelle Rodriguez, Kate Hudson and Kate Winslet. Now, Marsden is joining their adventurous ranks — that is, if he can ever get himself down off that cliff.

“It will be scary going over the edge,” Grylls warns the “Hop” actor as he looks down with hesitation. “But just hang tight, you’ll be fine.”

“This does not feel good,” Marsden counters.

“It will feel good at the end,” promises the British adventurer, who at one time was one of the youngest people in the world to climb Mount Everest.

To film the episode, the duo were airlifted via helicopter to Rattle Snake Canyon, Utah, where they were dropped onto one of the highest arches in the area. They were then forced to repel down the narrow canyons and climb the towering cliffs on the opposite side.

Another clip has Marsden and Grylls looking for Chuckawalla lizards, which seems somewhat tamer — until you realize that Grylls plans on eating them for dinner. “I don’t feel great about this,” says Marsden, perhaps realizing he’s a long way from Hollywood.

Luckily for Marsden, he may never survive to see suppertime, as he seems unsure about his mountain-climbing abilities when he reveals to the camera: “I don’t trust myself, my skill, my technique. So, that’s the scary part for me.”

Grylls, however, is confident that the actor can pull it off. Lowering himself over the edge, his final words in the clip are: “I’ll see yo

Source: Zap2it