Ancient Cave Painters May Have Experienced Hallucinations, Study Finds - ARTnews

A new study has shed light on the conditions in which ancient cave painters created artworks.

According to a report by CNN, researchers from Tel Aviv University focused on cave paintings in Europe have found that the painters chose some of the deepest and darkest parts of the caverns for their works.

It revealed that the use of fire to light the depths of the caves was necessary to create the ancient paintings, and that the painters were likely deprived from oxygen as a result of those fires.