Alien prehistoric creature, towering and majestic, set against a surreal landscape with an elongated silhouette. Its skin is textured and iridescent, shimmering with colors unseen on Earth, featuring intricate patterns resembling celestial constellations. Eyes are luminous, casting a gentle glow, while its elongated limbs tread softly on the unfamiliar terrain. In the background, an otherworldly sky filled with swirling nebulae and distant stars completes the ethereal scene.