forgotten bunker, underground facility, rusted metal walls, overgrown vegetation, dim lighting, eerie atmosphere, narrow corridors, abandoned control panels, scattered documents, moss-covered concrete, dripping water, flickering lights, broken pipes, steel doors, ventilation shafts, survival horror theme, post-apocalyptic setting, desolate ambiance, 3/4 perspective, detailed textures, ambient occlusion, high contrast shadows, muted color palette, dust particles in air, cobwebbed corners, survival gear, gas masks, emergency signs, warning labels, claustrophobic spaces, reinforced bunker entrance, bunker map on wall, aged paper, torn edges.