The correct answer to this open question is the following.
The question is incomplete because it does not indicate the place of the cave, or what kind of early cave. However, we can comment on the following.
What we can see represented when we look at the earliest cave paintings of some of the earliest cave paintings of the Upper Paleolithic, or during the Ice Age, is that these paintings depict animals and people that we could assume were hunters. One of the first cave paintings can be found in Europ, specifically in Altamira, Spain. But there are also many caves with paintings in Germany, France, Russia, Italy, and Great Britain.
A possible explanation for these artworks is that early humans tried to describe important moments in their daily life such as hunting because hunting was of the utmost importance to them. It was a survival activity. No hunting no food to feed their families. The paintings were such as recorded evidence of their feats.
