Prompt
"Generate a serene landscape image of Powder River, a 375-mile-long river in the United States, flowing through a scenic valley surrounded by rolling hills and mountains, with a few trees and bushes along its banks, under a clear blue sky with a few puffy white clouds; the image should be in a realistic style, capturing the natural beauty of the river and its surroundings, with the river's gentle flow and powdery sand banks subtly visible."
