A massive underground cavern, with mesmerizingly beautiful underground waterfalls, large crystal formations, and overgrown ancient ruins. Beautiful 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