Yama, full-body ancient death deity, standing or seated on a throne made of pale, ancient bones (no animals). Tall, imposing figure with dark, stone-like skin marked by subtle cracks like dried earth. Eyes glowing faintly with ancient judgment, calm but terrifying in their depth. Robes heavy, layered, ceremonial, decorated with symbols of death and the cycle of life. He holds a long ritual staff used to guide souls, carved and wrapped in dark cloth. His presence bends the air around him, as if gravity thickens. Aura heavy, tomb-like, inevitable. Background: vast underworld hall, fog, dim torches, drifting ash, endless darkness. Cinematic horror-fantasy, 4K, oppressive mythological atmosphere.