The Behistun Inscription (Persian: بیستون; Old Persian: Bāgastana; transl. "The Place of God") is a large rock-relief multilingual inscription carved at Mount Behistun, near the city of Kermanshah in Iran. It was authored by Darius I (r. 522–486 BC), the third ruler of the Achaemenid Persian Empire. The inscription was crucial to the decipherment of cuneiform as it includes three versions of the same text written in different cuneiform-based languages: Old Persian, Elamite, and the Babylonian variety of Akkadian. As such, the Behistun Inscription is to cuneiform what the Rosetta Stone is to Egyptian hieroglyphs: the document that proved most crucial in the deciphering of a previously-lost ancient writing system.