The Yenisey (, "Yeniséy"; , "Yenisei mörön"; Buryat: Горлог мүрэн, "Gorlog müren"; Tyvan: Улуг-Хем, "Uluğ-Hem"; Khakas: Ким суғ, "Kim suğ"), also romanised as Yenisei, Enisei, or Jenisej, is the fifth-longest river system in the world, and the largest to drain into the Arctic Ocean. Rising in Mungaragiyn-gol in Mongolia, it follows a northerly course before draining into the Yenisey Gulf in the Kara Sea. The Yenisey divides the Western Siberian Plain in the west from the Central Siberian Plateau to the east; it drains a large part of central Siberia.