monumental cosmic brutalist structure towering above a barren alien landscape, impossibly tall and angular with jagged geometric slabs, sharp overhangs, and dark concrete textures etched with glowing constellations and shifting star maps. vast cyclopean walls stretch into the misty void, dwarfing surrounding terrain, abstract celestial patterns pulse across its surfaces in faint iridescent hues — deep violets, starlight blue, hints of crimson. scale emphasized by tiny silhouetted figures at its base. eerie cosmic light beams from cracks in the structure, casting elongated shadows over fragmented terrain. otherworldly sky above filled with slow-moving nebulae and scattered black holes. the composition centers on the structure, using extreme vertical perspective to convey immense height. cinematic lighting, surreal atmosphere, brutalist sci-fi fused with cosmic horror aesthetic.