Terrible movie. I had such high hopes because of the many opportunities the setting and location had. The actress seemed inexperienced and all conversation sounded so forced and unnatural.
Generalization below, but ending not spoiled:
The whole movie is this incompetent girl who works as a Park Ranger, but switches her daily tasks with a far more experienced co-worker. The girl ends up listening to music while changing flyers and gets lost. Help can't arrive until tomorrow. She stumbles upon a dead body and has to survive the night while trying to protect the scene. She finds a campsite that suggests murder, but it really wasn't. All the conflict was between the main character and all her bad decisions until the last 5 minutes of the movie, but even then it wasn't satisfying.