Bear Grylls and Ben Stiller team up in the upcoming episode of NBC's "Running Wild" next week to explore caverns and rappel down slippery rock walls in the Scottish wilderness.
"This isn't safe," Stiller can be heard yelling as he plunges down a cliff-face in a preview clip for Monday's episode of Grylls' new adventure series.
"Running Wild With Bear Grylls," which premiered last week, pairs the famed survivalist with celebrities to explore outdoor locations around the world.
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"'Running Wild' is where I get to take some of our most loved Hollywood stars out on a great 48-hour adventure," Grylls said in a video promoting the series. "And I think what has been powerful for me is seeing how the wild can transform people, and it can empower people, and it can reconnect them with who they are. I think the danger of fame is that it's easy for people to go a little bit mad."
Zac Efron, Channing Tatum, Deion Sanders, and Tamron Hall are just a few of the other famous faces who appear on the show.
Grylls is best known for his Discovery Channel program, "Man vs. Wild."
His survivor competition reality show last summer, "Get Out Alive with Bear Grylls," drew an average
1.5 rating and 4.1 million viewers overall on NBC, according to Nielsen Media Research.
A former member of the British Special Forces, Grylls opened up his first Bear Grylls Survival Academy to the public in the Catskills Mountains last summer.
"Running Wild with Bear Grylls" airs Mondays at 8 p.m. EST on NBC.
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