Valley of Light in an Underwater Cave

A hyper-detailed digital painting of a vast underwater cave forming a sunlit valley. Two towering limestone cliffs rise on either side, their surfaces encrusted with coral and barnacles. The valley floor is a winding sandy plain dotted with seagrass and bioluminescent organisms. Sunbeams filter through a distant opening in the cavern roof, refracting through clear turquoise water and casting cyan, teal, and magenta hues on the rocks. Schools of tiny fish swim in ribbons, while stalactites hang like crystal chandeliers from above. The scene blends photorealistic water physics with painterly digital brushstrokes, high contrast, vibrant neon colors, and a deep sense of depth and wonder. Cinematic, ultra-wide perspective, dreamlike yet precise digital art style.