Source: wikibot/ishango-bone

= Ishango bone
{wiki=Ishango_bone}

The Ishango bone is a prehistoric artifact discovered in the Ishango region of the Democratic Republic of Congo. It dates back to approximately 20,000 years ago, during the Upper Paleolithic period. The bone is notable for its markings, which are thought to represent some of the earliest known forms of mathematical notation or arithmetic. The Ishango bone is made from the fibula of a baboon and has a series of engraved notches carved into its surface.