An ancient alien megastructure rises from the surface of a frozen ocean planet, its obsidian surface etched with softly glowing geometric patterns in deep amber and gold. The camera begins low, skimming inches above the cracked ice surface in a slow forward push, frost particles drifting upward in zero gravity. The structure towers impossibly tall, disappearing into thick violet cloud cover above. A single beam of cold white light pulses slowly from its apex downward, illuminating the ice below in rhythmic bursts. Small chunks of ice float upward in the beam, rotating slowly. The atmosphere is utterly silent and still except for the pulse. Camera continues its slow forward push until the megastructure fills the entire frame, its texture filling every detail — carved symbols, mineral veins, ancient oxidation. Extreme slow motion. Deep focus throughout. Color palette: obsidian black, cracked white ice, amber glow, violet sky. Cinematic 35mm, heavy atmosphere, cold color grade with warm accent light.