Mood: Mystical | Subject: A crystal-clear ice cave under a northern lights display | Timing: Midnight, when the aurora is at its most vibrant | Lens: Wide-angle | Lighting Conditions: The ethereal glow of the northern lights, casting an enchanting illumination onto the ice cave | Style: Fusion of surreal natural spectacle and icy tranquility | Colors: The vibrant greens and pinks of the aurora contrast with the icy blues and whites of the cave | Background: A backdrop of star-filled sky, its vast expanse adding depth and wonder | Perspective: Eye-level, capturing the majesty of the ice cave against the celestial performance | Focal Point: The entrance of the ice cave in the foreground, its textured surface creating a captivating contrast with the soft, dancing lights | Space: Expansive, emphasizing the grand scale of the cave and the mystical allure of the scene | Pattern/Texture: The smooth, reflective surfaces of the ice contrasted with the fluid, shifting patterns of the aurora | Element defining the scale: A single, detailed icicle in the foreground, its frozen intricacies highlighted by the northern lights, providing a sense of the scene's surreal scale | Depth of Field: Deep, focusing on the ice cave while subtly blending into the aurora-filled sky backdrop | Feeling: Magical and awe-inspiring | Contrast elements: The mystical scene of a crystal-clear ice cave under a northern lights display at midnight, its surreal spectacle and icy tranquility enhanced by the ethereal glow of the aurora and contrasting textures, set against the backdrop of a dark, star-filled sky.