That's not history, or the beginnings of science. Calling it such some groups of people making science fiction because they are afraid to believe what the Bible says. After the Beginning, after Adam and Eve sinned, climate was so gentle that people didn't live in caves... for a while. And people were very intelligent, because they were near perfect, and wouldn't have lived in caves first. They would have 'built' shelters out of plants/trees if they had any at all.
Cave art mostly appeared later - even though science misinterprets carbon dating - some art being graffiti with or without people living in the caves. "Caveman," as a modern term, distorts what a true cave living person really was... and this is because you can find people living in caves right now.
However, it's about the art. People around the world make their own art right now. Kids in school draw on paper with pencil and crayon. Most people doodle a little at times, in the margins or elsewhere.
It's all 'cave-art' because it is simply unprofessional art. There probably wasn't any formal getting together of people thousands of years ago just to draw art in caves. Yet, modern historians try to make it sound that way, sort of.
