score_9, score_8_up, score_7_up, ((sharp focus)), ((extreme definition)), ((HD)), ((ultra high definition)), ((4k)), source_fantasy, concept art by syd mead, ink art, black and white, medieval, Eldritch horror, symmetry landscape, with gigantic complex robot bosstyle artialien robot creature crawling through a ((symmetric round)) rock cave ((tunnel)), the spider having ((a symmetric cluster of many tiny amber LED round eyes with no pupils)), its mouth closed, with 8 symmetric robot spider legs spread out far apart onto the cave walls, with a ((giant perfect symmetry white moon high above in the black sky, with no stars)), night, moonlight, long shadows casted onto ground, long shadows casted in the cave tunnel, a small stream of water with relections is in the cave tunnel, with bioluminescent glowing amber crystals, dark, crystal, chiaroscuro, low-key, bosstyle, retro futuristic landscape