Open Road Films has released the first trailer for The Green Inferno, Eli Roth's first feature directorial outing since 2007's Hostel: Part II. Lorenza Izzo, Ariel Levy, Daryl Sabara and Kirby Bliss Blanton star as a group of New York college students and environmental activists who travel to the Amazon jungle to save an endangered tribe. Little do they know that these natives are actually cannibals, and they must fight to get back home in one piece. Take a look before this gruesome thriller drips into theaters September 5.