A rugged, muscular bearded man with unkempt hair, wearing rough-hewn fur and simple tribal accessories, crouches by a crackling campfire inside a dark, shadowy cave. His body is smeared with red and black paint in jagged, primitive patterns. His face shows the wear of survival, deep wrinkles forming around his eyes and mouth. The cave walls behind him are adorned with faded red handprints and crude animal drawings, including a fierce-looking feline. The warm, flickering light of the fire casts dramatic, uneven shadows on the rough stone walls, enhancing the raw, ancient atmosphere. The man is lost in thought, as if contemplating the harsh reality of his existence. Photorealistic, gritty, and historically accurate representation of a prehistoric caveman. UHD 32k