A breathtaking conceptual artwork of a futuristic underground city

A breathtaking conceptual artwork of a futuristic underground city, where nature and technology harmoniously coexist. The vast subterranean tunnels are illuminated by an enchanting blend of bioluminescent fungi and radioluminescent fibers, casting a mesmerizing glow on ancient rock formations. Towering stalactites and stalagmites stand as silent witnesses to the bustling cityscape, while maglev trains glide silently through the corridors. The atmosphere is filled with the scent of dampness and minerals, intermingling with the faint ozone tang of high-energy plasma conduits. Holographic advertisements and neon signage intertwine with the soft glow of cultivated phosphorescent flora. The markets teem with life, offering an array of exotic products and services, while techno-shamans perform their mystical magic with futuristic technology.