Establishing reference photograph of a place: Wide eye-level view of an empty industrial spaceship corridor, a massive slate-gray blast door sealed shut at its center, heavy riveted plating and hazard-striped frame. Ceiling lined with thick pipes and dormant vents, faint residual haze lingering low. Harsh white industrial ceiling lamps cast hard light and deep dark shadows across grated metal floor panels. Unlit yellow warning beacons mounted beside the door. Cold metallic surfaces, slate gray and dark shadow palette, tense quiet atmosphere, no people, no text.
No people, no visible text, no watermark.
