Dreams involving fishing, demolition work, and the discovery of ancient body parts can be quite symbolic. Here's a possible interpretation for each significant element:

1. Fishing for Giant Squid: Squid in dreams often represent the subconscious mind and hidden emotions. Fishing for a giant squid might indicate that you are attempting to explore deep, possibly repressed feelings or issues in your life. The size of the squid suggests that these feelings could be significant or overwhelming.
2. Demolition Work: This may symbolize a desire or need to break down old structures in your life, whether they are beliefs, habits, or relationships. It could signify a transformational phase where you are clearing out the old to make way for new opportunities or perspectives.
3. Finding Ancient Viking Body Parts: Discovering body parts, especially those that are ancient, could represent unresolved issues or experiences from your past that are still affecting you. Vikings often symbolize adventure, exploration, and a warrior spirit, so this could suggest that you are unearthing aspects of your own history that require healing or acknowledgment.

Overall, this dream might be urging you to confront and address deep-seated emotions or past experiences in order to facilitate personal growth and transformation. It could be beneficial to reflect on any current challenges or emotional struggles you are facing and how they relate to your past. Consider journaling or talking to someone you trust about these feelings to gain further insight.