The Ural (, ]), known as Yaik (, , ]; , جايىق, ]) before 1775, is a river flowing through Russia and Kazakhstan in the continent border between Europe and Asia. It originates in the southern Ural Mountains and discharges into the Caspian Sea. At , it is the third-longest river in Europe after the Volga and the Danube, and the 18th-longest river in Asia. The Ural is conventionally considered part of the boundary between the continents of Europe and Asia.