Salt Flat Trapdoor Railway Station 15s Video Prompt

15-second strange experiment on a sunlit salt flat. 0–4s: A traveler steps into soft ground, leaving a sharply defined footprint. They kneel and lift its edge like a small trapdoor. 4–9s: Beneath it is a staircase descending into a crowded railway station. Tiny commuters rush through shafts of sunlight shaped like shoe treads. 9–12s: The traveler lowers one finger into the opening. Inside the station, it descends as an enormous marble column. 12–15s: A tiny commuter climbs out and leaves a full-size footprint beside the original. Extreme scale contrast, realistic textures, distant station announcements.