32k, High-quality, Hyper-realistic, perfectly Super design of A self-sustaining, subterranean city carved into a vast desert landscape, its buildings resembling ancient, earthen mounds. The city is powered by a network of solar panels and geothermal energy sources, providing a sustainable source of energy. The buildings are constructed from locally sourced materials, such as adobe bricks and natural stone, and are designed to regulate temperature and maximize natural light. The city's central hub features a massive, underground garden that utilizes hydroponic technology to grow fresh produce. **Materials: The buildings are constructed from adobe bricks made from locally sourced clay and straw. The walls are thick and insulated to maintain a comfortable temperature inside, while the roofs are made of a special, light-diffusing material that allows natural light to penetrate the interior. The underground garden utilizes hydroponic technology and artificial lighting to grow fresh produce. - Mood: A serene, contemplative, and timeless atmosphere, where the city blends seamlessly with the desert landscape.