A huge intricate cavern with a beautiful underground waterfall, ancient civilization, underground landscape, professional ominous concept art, by artgerm and greg rutkowski, an intricate, elegant, highly detailed digital painting, concept art, smooth, sharp focus, illustration, in the style of simon stalenhag, wayne barlowe, and igor kieryluk.
low-res, split screen, nudity, text, error, cropped, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, picture frame, cut off, out of frame, oversaturation, cartoon, 3d, disfigured, bad art, deformed, poorly drawn, close up, b&w, weird colors, blurry, watermark