32k, High-quality, Hyper-realistic, perfectly Super design of A sprawling underground city built within a network of interconnected caverns in a vast desert landscape. The city's buildings are constructed from a combination of locally sourced materials, such as adobe bricks and natural stone, and are designed to blend seamlessly with the surrounding environment. The city is powered by a combination of solar panels, geothermal energy sources, and wind turbines, creating a sustainable and self-sufficient ecosystem. **Materials: The buildings are constructed from locally sourced materials, such as adobe bricks and natural stone, creating a sense of harmony with the surrounding desert landscape. The walls are thick and insulated to regulate temperature, while the roofs feature a network of solar panels that generate electricity. Geothermal energy sources are tapped into to provide additional power, while wind turbines are strategically placed on the city's edges to harness the desert winds. - Mood: A mysterious, ancient, and sustainable atmosphere, where the city thrives in harmony with its desert environment.