The Amu Darya - Amudarya (- Omudaryo or daryoi Omu; - Âmudaryâ;, with darya (Pahlavi) meaning sea or a very large river), is the longest river in Central Asia. Amu is said to have come from the city of Āmul, now known as Türkmenabat. It is formed by the junction of the Vakhsh and Panj rivers. Many local people refer to the river as Jayhoun (جيحون) which was thought to be a derivative of Gihon, the biblical name for one of the fou… (More on Oxus)