A beautiful highly detailed futuristic (Warhammer 40k Space Marine fortress on Baal, embedded in mountain, tall fortress walls:1.3) by Simon Stalenhag and andree wallin, science fiction, dystopian, hard light, (centered composition:1.2), sci-fi, featured on artstation, artstationhq, 70mm photo, 4k, 8k, octane render, aesthetic, exciting, cinematic, moody | Sci-fi