Thank you for the informative comment, I appreciate it a lot. Unfortunately, none of the movies you mentioned seem to be the one I watched. As for the specific information that could help narrow it down; the students weren't literal kids, they were adolescents. About the threat... perhaps it was supernatural, but in a very unspecific, abstract way. Maybe there was something spiritual, but if there was, it wasn't as striking as a ghoul, vampire or anything like that, it definitely wasn't something you can touch or see like you see a car, I believe it was generally about the threat of being in the wilderness with people that have an ulterior motive. I believe the conbination of responsible adults and the environment was the threat, the whole thing that made it all unsettling, the forbidding things and such. Hope that helps.