Create an eerie dark-fantasy portrait of a solitary hooded figure wearing a long flowing dark robe and riding a powerful black horse. The rider’s face is completely hidden inside a deep hood, creating a mysterious and ominous presence. Give the horse sleek, strong lines, a black overall tone, and clearly visible mane and tail. Set the scene in a dramatic valley or canyon where towering cliffs frame the composition and emphasize loneliness, scale, and isolation. Fill the landscape with thick rolling fog that swirls around the rider and horse, creating an ethereal supernatural atmosphere. Use a monochrome palette of deep black, charcoal gray, pale silver, and cold mist. Add low-key cinematic lighting, strong contrast, deep shadows, overexposed mist highlights, a gloomy sky visible through the fog, rocky barren ground beneath the horse, and volumetric fog that feels like it is moving. The emotional tone should be mysterious, ominous, solitary, medieval, mythic, gothic, melancholic, and introspective, like dark fantasy concept art for a cinematic fantasy scene. Avoid gore, readable text, logos, extra watermarks, malformed horse anatomy, and low-resolution artifacts. 16:9 composition.