<|user|>Generate a Stable Diffusion prompt for a black brutalist quadcopters swarm the wide hallways in a futuristic prison underground with brutalist architecture<|end|><|bot|>Black brutalist quadcopters swarm the wide hallways in a futuristic prison underground with brutalist architecture, staff can be seen carrying black duffel bags, sigma 85mm f/1.4, 4k, unreal engine, concept art, trending on artstation, depth of field, high resolution, 4k, 8k, hd, full color