Compose the opening sentence of a story that is set in a dark, spooky forest:
As the pale moonlight filtered through the gnarled branches of the ancient trees, a shiver ran down her spine while she navigated her way through the impenetrable darkness of the eerie forest.
Complete the following task based on the instruction and optional input provided.### Instruction:
Compose the opening sentence of a story that is set in a dark, spooky forest:

### Output:
As the pale moonlight filtered through the gnarled branches of the ancient trees, a shiver ran down her spine while she navigated her way through the impenetrable darkness of the eerie forest.