That’s a photo from El Castillo Cave in Spain showing the earliest dated art. New research puts one dot at a minimum of 40,800 years old. Put them on canvas and they could be by a contemporary of Rothko or Twombly. The other interesting part of this report is the possibility that Neanderthals were the artists.
Werner Herzog’s “Cave of Forgotten Dreams,” about the slightly younger Chauvet cave and is essential viewing. See my review from last year, which discusses some of the photography-related ideas in the documentary.