Vertical landscape photography, vast grassland horizon, a cowboy with black wide-brim hat riding a brown horse walking horizontally, behind him stands a towering massive cumulus cloud, one side of the cloud is gilded with warm golden sunset light, the other side has deep shadow, strong light and shadow contrast, clear deep blue sky, soft side light from sunset, natural light on meadow, cinematic wilderness atmosphere, realistic outdoor photo, rich light detail, shot on telephoto lens, 8K ultra high definition --ar 9:16 --v 6.0 --style raw --s 220 --q 2