Immersive Background for Norse Ritual Performance

I'm seeking a talented designer to create a comprehensive, immersive backdrop for a 35-minute, long-form, ritualistic performance rooted in ancient Norse themes. The atmosphere should be dark and foreboding, reflecting the gravity and intensity of the piece.

Key Requirements:
- Utilize both provided images and specific directions to craft the background
- Seamlessly integrate the images into the overall design
- Incorporate elements such as runes and ancient symbols, nature elements like forests and mountains, and mythical creatures or gods

Ideal Skills:
- Proficiency in visual design for performance
- Experience with creating immersive environments
- Understanding of Norse mythology and aesthetics

The backdrop needs to be an engaging and immersive experience for the audience, enhancing the performance and conveying the intended mood. Please provide examples of similar past projects, and your bid should reflect an understanding of the scope and complexity of this task.