Subterranean music hall carved within a colossal geode, walls adorned with massive amethyst and citrine crystals. Tiered seating of polished rose quartz, each row illuminated by bioluminescent fungi. Stalactite chandeliers drip with delicate quartz points, casting prismatic light across the cavern. Central stage of smooth onyx, bordered by glowing apatite crystals. Distant chamber waterfalls create a misty ambiance, refracting light into rainbow hues. Ceiling studded with rare alexandrite, shifting colors with changing angles. Intricate sound system integrated into crystalline formations, speakers disguised as geodes. VIP booths nestled in alcoves lined with iridescent labradorite. Bar area featuring a counter of polished malachite and stools carved from petrified wood. Soft, diffused lighting from strategically placed fluorite clusters. 8k resolution, photorealistic, intricate detail, masterpiece quality. <lora:FluxMythAn1meL1nes:0.3> <lora:nwsj_flux0924:1.0> <lora:FluxMythG0thicL1nes:0.9> <lora:flux_dev:1>