Eldritch, cosmic horror, eerie atmospheric darkness, abandoned asylum, crumbling stone walls, overgrown with ivy, broken windows, shattered glass, dim flickering fluorescent lights, eerie silence, faint whispering voices, ancient forbidden knowledge, mysterious artifacts, ritualistic symbols etched into walls, creepy ambient sounds, unsettling camera angles, dutch angle composition, low-key lighting, foggy mist, eerie shadows, otherworldly presence, unfathomable entities lurking in darkness.