A colossal underground city carved into the walls of an enormous caver

A colossal underground city carved into the walls of an enormous cavern, illuminated by glowing veins of minerals and bioluminescent fungi. Towering stone structures, with intricate carvings and forgotten symbols, rise like ancient skyscrapers, their windows glowing faintly with remnants of lost energy. big staircases and bridges, built for beings far taller than humans, stretch across the cavern, hinting at an ancient race of titans who once lived here. The air is filled with mist, and a lone explorer, dwarfed by the immense scale, walks cautiously through the ruins. Hyperrealism, cinematic framing, ultra-HD 8K, (Masterpiece: 1.5), (best quality: 1.5), mysterious atmosphere, dramatic lighting.