Establishing reference photograph of a place: 2D hand-drawn illustration of a massive circular steel vault door, fully closed and sealed, set into a thick reinforced concrete wall in a dim underground chamber. Heavy locking bolts, a large wheel handle, riveted panels with worn scratches. Low angle, medium framing. Lighting from flickering caged wall lamps casting deep charcoal shadows and harsh metallic highlights along the door's edge. High-contrast inked linework, dark charcoal palette with cold pale-gray accents, dusty floor, no people, no text.
No people, no visible text, no watermark.
