The site has been occupied since the Neolithic and Chalcolithic periods (pot burials), with cist tombs from ca. 2400 BC (Early Bronze Age). The city is mentioned in documents found in the Ebla archives of the 3rd millennium BC. According to documents from the archives of Mari and Alalakh, dated from c. 1800 BC, Carchemish was then ruled by a king named Aplahanda and was an important center of timber trade. It had treaty relationships with Ugarit and Mitanni (Hanilgalbat). In ancient times, the city commanded the main ford in the region across the Euphrates, a situation which must have contributed greatly to its historical and strategic importance.