A colossal, bioluminescent axolotl glides through a subterranean crystal cavern, its translucent body pulsating with ethereal blue and purple hues. Delicate, feather-like external gills fan out like a royal collar, shimmering with bioluminescent speckles. Its large, innocent eyes reflect the dazzling array of quartz and amethyst formations surrounding it. Iridescent scales catch and refract light, creating a mesmerizing display of colors. The axolotl's elongated tail swirls gracefully, leaving a trail of glowing particles in its wake. Crystal-clear underground streams weave through the cavern, their surfaces mirroring the creature's radiant form. Tiny, luminous cave-dwelling organisms float around the axolotl, accentuating its immense size. The scene is rendered in a hyper-realistic digital painting style, with meticulous attention to textures and lighting. 8K resolution, ray-tracing, volumetric lighting enhances the magical atmosphere of this hidden underground world. <lora:bm-goth_epoch_1:0.1> <lora:CPA:0.5> <lora:flux.1_lora_flyway_Epic-detail_v2:0.1> <lora:Sinfully_Stylish_1.0_Flux:0.3> <lora:MoriiMee_Gothic_Niji_Style_FLUX:0.1> <lora:flux_dev:1>