A lone explorer sits by a crystal-clear river on a giant ringworld, the ring curving into the sky with megastructures and a bright star

Prompt

A serene scene on a massive artificial ringworld: a lone explorer sitting by a crystal-clear river with a breathtaking view of the ring curving into the sky, distant megastructures, and a bright central star. Soft golden hour lighting, lush vegetation, sense of wonder and scale. Cinematic landscape, hard sci-fi inspired by Larry Niven, ultra-realistic, peaceful yet epic.