Natalie Portman showed off her mettle in , but does she have what it takes to survive the wilderness?The Oscar winner kicks off the new season of , where the survivalist takes Portman to the slot canyons of Southern Utah where the actress learns how to descend various canyons. Only ET has the exclusive sneak peek at Portman in action, where she also reflects on the Marvel experience and returning to wield the mighty hammer in the latest MCU blockbuster.In the heightened season, Grylls takes the daring adventures up a level by teaching celebrity guests essential survival skills that they will have to master and then prove they can use in a high-stress situation.