An giant underground very gloomy multi-layered structure of rusty thick iron grids, dense chain-link fencing and peeling walls with multiple floors. Inside view, collapsed floors, bent rusted iron, masterpiece, macabre, black background, layers, corners, cinematic, hyperdetailed, photorealistic, hyperrealism, octane render, 8k, depth of field, bokeh, architecture, shadows, art by Zdzisław Beksiński, Arthur Rackham, Dariusz Zawadzki