An incredibly beautiful underground crystal cave with a pristine turquoise lake in the middle, emanating an ethereal soft blue- green glow from its depths. Massive stalactites and stalagmites encrusted with minerals shimmer with iridescent rainbow colors, creating a natural light show. The cave walls are textured with crystalline formations, water droplets catching the mystical light. Photorealistic style, dramatic lighting, high detail, 8K resolution, shot with a wide- angle lens to capture the vast cavern's scale, inspiration from National Geographic photography. ((4k, 8k, Ultra HD)), ((Masterpiece :1. 2)), ((Best quality :1. 2)), ((Detailed :1. 5)), ((Detailed background :1. 5)), score_9, score_8_up, score_7_up