Describe a scene where a character is lost in a dense forest, trying to find their way out as the sun begins to set

Describe a scene where a character is lost in a dense forest, trying to find their way out as the sun begins to set. They can hear all kinds of mysterious noises and rustlings in the underbrush around them, making them feel more and more anxious. The darkness starts to creep in among the trees, and they realize they may have to spend the night alone in the wilderness. How do they react?