Evidence of some of the earliest known stone-tipped projectile weapons (a characteristic tool of ''Homo sapiens''), the stone tips of javelins or throwing spears, were discovered in 2013 at the Ethiopian site of Gademotta, and date to around 279,000 years ago. In 2019, further evidence of complex, Middle Stone Age, projectile weapons was found at Aduma, dated 100,000–80,000 years ago, in the form of points considered likely to belong to darts delivered by spear throwers.