The Proto-Elamite period, also known as Susa III, is a chronological era in the ancient history of the area of Elam, dating from c. 3100 BC to 2700 BC. In archaeological terms this corresponds to the late Banesh period. Proto-Elamite sites are recognized as the oldest civilization in Iran. The Proto-Elamite script is an Early Bronze Age writing system briefly in use before the introduction of Elamite cuneiform. The Proto-Elamite script has not yet been completely deciphered.