The phrases "its thousand narrow fingers, creeping" and "claiming the land for its own" create a sense of anxiety and tension in the story's mood.
The phrases "its thousand narrow fingers, creeping" and "claiming the land for its own" have an impact on the story's mood by creating a sense of anxiety and tension.
These phrases evoke a feeling of unease due to the creeping and claiming actions, suggesting a presence that is pervasive and possessive.
The use of vivid and descriptive language adds to the intensity of the mood, making the reader feel a sense of urgency and uncertainty about the characters' next actions.