It's astonishing how they manage to induce terror with just a couple of actors, a car, rainy weather, and the wilderness. This is a case of low-budget filmmaking done well. Jeremy Lovering is an Edgar Wright collaborator, and his frame choices (with plenty of close-ups of the protagonists' worried faces) instantly draw you into the film. The score is also quite effective and adds to the creepy mood. The plot presents a total nightmare for folks who suffer from panic attacks - travel horror may not be a genre recommended for those people. The storyline progression is somewhat questionable, but the pacing remains apt.
The first key jumpscare happens at an unexpected juncture, and I think the film deserves some points on that front. The entry of the third character deflates the tension to some extent, yet the performances (of all three) keep you invested. Even from a psychological horror standpoint, the plausibility of certain developments lack finesse especially towards the end of the film. Nonetheless, I think it's a solid exercise in building tension and the atmospherics really add to that. If you liked Dead End, there's a good chance you'll savour this one too.