<|user|>Gimme a Stable Diffusion prompt representing a  illustration of an imposing evil obsidian fortress with a massive central spiked tower<|end|><|bot|>a detailed illustration of an imposing evil obsidian fortress with a massive central spiked tower, in a crimson wasteland with a pitch black sky, by moebius and tyler edlin and lee madgwick, trending on artstation, digital art, 4k resolution, detailed, octane render, high quality, sharp focus, hq artwork, insane detail, concept art