Promptmasterpiece, 8K, UHD, ultra high-res, photorealistic, primitive man crouching on the ground, rough, tanned skin, muscular build, messy dark hair and beard, focused expression, watchining a prey, looking at a prehistoric dinosaur, primitive tools scattered nearby, rocky and rugged landscape, dark cave in the background, smoke rising gently, early morning light breaking through, cool earthy tones, wild and untamed environment, atmosphere of survival and determination, raw and gritty realism