<|user|>Write me a Stable Diffusion prompt depicting black military quadcopters swarm<|end|><|bot|>Black military quadcopters swarm, in the wide hallways in a futuristic prison underground, brutalist liminal architecture, sigma 85mm f/1.4, 4k, depth of field, high resolution, 4k, 8k, hd, full color, octane render, 3d render, unreal engine, concept art, trending on artstation