In the Pines (2016) online

When BJ invites her friends on a backcountry camping trip, she promises a relaxing weekend away from technology-obsessed society. But after a suspicious accident leaves them stranded and fearing for their lives, the friends quickly realize they're not suited to surviving without modern conveniences. Nature is unforgiving, but as relationships fracture and secrets come to light, it becomes clear that the greatest threat may be from each other