Dark fantasy, eerie atmosphere, abandoned cathedral, crumbling stone walls, Gothic architecture, intricate carvings, mysterious fog, misty ambiance, dimly lit, flickering torches, eerie shadows, demonic creatures lurking in the darkness, horned beasts, glowing red eyes, bat-like wings, razor-sharp claws, tattered black robes, ancient tomes scattered on the floor, mysterious artifacts, forbidden knowledge, dark magic, apocalyptic composition, high contrast lighting.