PROMPT:
Create a breathtakingly realistic image of an underground metropolis, where towering crystal formations pierce the sky, surrounded by a labyrinth of iridescent tunnels and gleaming metallic architecture. Incorporate vibrant colors, with an emphasis on electric blues, emerald greens, and radiant oranges, while minimizing the use of pink hues. The atmosphere should exude a sense of mystique and wonder, as if the viewer has stumbled upon a hidden world. Include intricate details, such as glowing luminescent plants, and subtle hints of steam-powered machinery humming in the distance. The overall mood should be one of awe-inspiring discovery, as if the viewer is witnessing a long-abandoned civilization coming back to life.
