Dreams about coffins can symbolize the end of something, such as a phase in your life, a relationship, or an idea. The closed coffin may suggest that there are aspects of yourself or your life that you are not ready to confront or that you feel are being hidden away.

The scene of many people forming a human chain and nailing themselves may represent a feeling of collective pressure or the influence of a group that is leading you toward a harmful or destructive path. Your instinct to withdraw from the group signifies your intuition or inner wisdom guiding you to avoid a situation that you sensed was wrong or dangerous.

The imagery of burning and melting could symbolize the consequences of following the crowd or succumbing to harmful beliefs or actions. Your realization that withdrawing was the right choice may indicate a desire for self-preservation and authenticity.

Overall, this dream could be urging you to remain true to yourself and trust your instincts, especially in situations where you feel pressured by others. It may also reflect a need to evaluate the influences in your life and ensure they align with your values and well-being.