The peddler hears hammer strokes coming from a nearby iron mill, which serve as a guiding sound that leads him out of the forest. The rhythmic clang of the hammer resonates through the trees, offering him a sense of direction amidst his disorientation. This sound not only provides a practical way to escape the woods but also symbolizes the presence of human activity and community, contrasting sharply with his feelings of isolation. As he moves toward the sound, it represents a pivotal moment in his journey, suggesting the possibility of connection and redemption after his recent actions.