Prompt used to generate this image:

A cinematic, ultra-detailed 3D render of a colossal square frame suspended in a dark abyss. Within the frame lies a lush vertical garden composed of mossy stone blocks, small trees, ferns, and potted plants. At the center, a large circular bronze machine with a glass iris sits like a portal, surrounded by exposed gears, rivets, and pipes. Scattered around are copper orbs, cylindrical tanks, and ornate mechanical devices. The floor is a reflective checkered metal tile, lit by warm amber lanterns on stone pedestals that cast soft, dramatic shadows. A cool blue ambient light washes from above, enhancing a moody steampunk atmosphere. Chains and rigging hang from the ceiling, suggesting the chamber is a reclaimed ancient workshop with a sense of awe and mystery.