Cinematic train crossing a frozen antarctic under aurora

Ultra-photorealistic cinematic vertical shot of a solitary retro-futuristic luxury train crossing an endless frozen Antarctic expanse under a spectacular Aurora Australis. The train is small in frame, with warm amber-lit windows, polished frost-covered steel, Art Deco design, subtle steam, weathered metal, and realistic ice buildup. The railway crosses glaciers, ice cliffs, pressure ridges, frozen lakes, drifting snow, and blue glacial ice. In the far distance, beneath massive ice shelves, a forgotten ancient city emerges from the ice. White stone domes, spires, arches, colonnades, bridges, observatories, plazas, staircases, and colossal statues are partly buried in snow and translucent ice. A faint golden-blue glow comes from inside the city, suggesting dormant technology. The Aurora Australis fills the sky with emerald, cyan, sapphire, violet, and magenta curtains. Stars, the Milky Way, meteor trails, polar clouds, snow crystals, and ice particles create depth. Cinematic, IMAX scale, HDR, volumetric light, realistic snow, photorealistic, ultra-detailed, 8k.