Prompt
"Generate a serene and natural image of a river flowing through a vast wilderness, surrounded by lush greenery and majestic mountains in the background. The Alagnak River, a 64-mile-long waterway in Alaska, United States, winds its way through Katmai National Park and Preserve, with crystal-clear waters reflecting the vibrant colors of the surrounding landscape. Include a few kayaks or rafts in the distance, highlighting the river's popularity for fishing, rafting, and boating. Capture the tranquility and beauty of this nature reserve, protected by the National Park Service, with an emphasis on the river's stunning scenery and diverse wildlife, including fish, arctic char, and grayling."