A close up of a waterfall with a rainbow in the background

A waterfall with crystal clear waters, formation of a beautiful rainbow between the waters, green grass, trees, rays of sun, water droplets on the screen, refreshing, Masterpiece, best quality, (8k wallpaper of very detailed CG unit) (best quality), (best illustration), (best shadows)

lowres, text, error, missing fingers, extra digit, fewer digits, cropped, worst quality, low quality, normal quality, jpeg artifacts,signature, watermark, username, blurry, artist name, humans, house, castle, fort