Act as a visionary sci-fi concept artist with 10+ years of experience in extraterrestrial landscapes. Create a breathtaking image of an alien desert dominated by towering, bioluminescent sand dunes under a tri-moon sky. The dunes should glow faintly [COLOR: neon blue/purple/green], casting eerie reflections on the cracked [GROUND TEXTURE: obsidian-like/glass-like/organic webbing]. Include strange, wind-sculpted [ROCK FORMATIONS: spiral spires/hollow megoliths/floating shards] in the distance. The atmosphere should feel [MOOD: hauntingly serene/oppressively vast/electrically charged], with subtle hints of an ancient alien civilization buried beneath the sands. Render in ultra-high detail with cinematic lighting, emphasizing the otherworldly scale and mystery.