Angel Acosta-Colon (shown here) poses with a number of pictographs, including an unusual find—an animal that looks like a lion. He speculates that this may be the first cave art drawn by slaves ...

The art on the chamber’s ceiling—a deer ... In a different chamber a rendering of cave lions seems to emerge from a cut in the wall, accentuating the hunch in one animal’s back and shoulders ...

The painting in Lascaux, France, as well as other prehistoric art cited in the study, also suggested that other ancient relics were used for time-taking. The Lion-Man of Hohlenstein-Stadel Cave ...