A photo-realistic, 3d rendering of a dark, empty room with a checkered floor and walls covered in small, metallic particles. the room is dimly lit with a black background, and the floor is covered in a grid-like pattern of alternating black and white squares, creating a chequered effect. the walls are also covered in metallic particles, giving the room a textured appearance. in the center of the image, a single, straight, black doorway stands out against the dark background, casting a sense of depth and dimension. the overall atmosphere is eerie and mysterious, with a focus on the texture and depth of the room.