Mood: Mysterious | Subject: A geometrically perfect formation of sand dunes under a starlit desert sky | Timing: Midnight, when the desert is bathed in the ethereal glow of a billion stars | Lens: Wide-angle | Lighting Conditions: The soft, bewitching light emitted by the stars casting a silvery glow on the sand dunes | Style: Fusion of mysterious natural beauty and abstract geometry | Colors: The silvery whites and grays of the starlight strikingly contrast with the warm, golden hues of the sand | Background: A backdrop of the endless, velvet desert sky, its vast expanse dotted with infinite stars adding depth and intrigue | Perspective: Ground level, capturing the captivating spectacle of the sand dunes under the starlit sky | Focal Point: The highest dune, its undulating structure most radiant under the starlight | Space: Expansive, emphasizing the grand scale of the desert and the mysterious beauty of the starlit night | Pattern/Texture: The smooth, wavy pattern of the sand dunes contrasted with the coarse, granular texture of the desert sand | Element defining the scale: A solitary, detailed cactus in the foreground, its silhouette providing a sense of the scene's mysterious scale | Depth of Field: Deep, focusing on the dune formation while subtly blending into the star-dusted sky backdrop | Feeling: Mysterious and awe-inspiring | Contrast elements: The mysterious scene of a geometrically perfect formation of sand dunes under a starlit desert sky at midnight, their natural beauty and abstract geometry enhanced by the ethereal starlight and contrasting textures, set against the backdrop of a mesmerizing, night-veiled desert landscape.