Foreign film with boy scout in the middle of no where horror

There is 3 counselors with them or whatever you call them. 2 guys and one girl. It is a foreign film. There is a kid out in the woods that grew up out there I think and I think his dad tries to kill people out there.

I do know one part of the film the boy scout kids are looking at playboy magazines or something like that in a tent. I know the tent does get run over soon by the killer dad.