Wow, we're still trying to catch our breath!
Zac's strength, focus, and determination is absolutely AH-Mazing to witness as he pulls himself along a rope strung above 150-foot ravine!
We aren't sure what was more distracting…Zac Efron's hot bod or the 150-foot drop!
If you're wondering why anyone would do this, let alone a celeb like Zac, the adrenaline junkie is one of six stars who signed up to hang out with British adventurer, Bear Grylls, for a new reality show on NBC.
You might remember Bear from the totally crazy survival show, Man Vs. Wild on which Ben Stiller and Will Ferrell both appeared!
Zac is apparently a HUGE fan of Bear so we have a feeling he jumped at the chance to be on the series!
Check out Zac answer whether or not he considers himself to be an experienced outdoorsman…AFTER THE JUMP!!!
Tags: bear grylls, reality tv, running wild with bear grylls, video, zac efron