Dark mysterious underground tunnels, vaulted ceilings, ornate ironwork, grand chandeliers, eerie dim lighting, rich jewel-toned colors, emerald green marble, crimson red accents, metallic gold details, mysterious purple hues, dramatic archways, intricate stone carvings, atmospheric fog effects, low-key backlighting, cinematic composition, high-contrast ratios, bold typography, distressed textures, weathered stone walls, ancient artifacts, mystical ambiance.