A red, crosshatched design adorning a rock from a South African cave may take the prize as the oldest known drawing. Ancient humans sketched the line pattern around 73,000 years ago by running a chunk ...
Around 73,000 years ago, in a cave now known as Blombos, someone took a pointed lump of iron-rich rock—ochre—and dragged its tip across another rock, leaving behind a pattern of red, crosshatched ...