* The Hatchet Itself: The hatchet is a physical object but represents a lot more than just a tool. It symbolizes Brian's growing independence, his ability to survive in the wilderness, and his power to overcome his fears. It's a metaphor for self-reliance and resourcefulness.
* The Wilderness: The Canadian wilderness is not just a setting; it acts as a metaphorical crucible for Brian. It's where he is forced to confront his own limitations, learn to adapt, and ultimately discover his inner strength.
* The Plane Crash: The crash itself represents the sudden shift in Brian's life, a traumatic event that thrusts him into a completely different reality. It symbolizes the loss of his old life and the beginning of his journey of self-discovery.
These are just a few examples, and there are other possible interpretations depending on how you read the story.
Important Note: While the book uses strong imagery and symbolism, it focuses more on the realistic depiction of survival and the human spirit. It relies on literal descriptions and actions rather than extensive use of metaphors.