It's only skin deep

Sudden, gory death hides behind every bush. When beautiful Jennifer and her friends embark on a backpacking excursion deep into the woods, they come chest to chest with an evil as old as the trees. Listen...above the crackling of the campfire...is that the sound of a twig snapping or your best girlfriend's neck? The interlopers discover that when the locals warn you not to trespass, it's a warning you should heed.