The Volga River is the longest river in Europe, about 2,300 miles (3,700 km). It originates at an elevation of only 740 feet (225 m) in the Valday Hills northwest of Moscow, connects with the Rybinsk Reservoir. The river heads east past Yaroslavl, Nizhny Novgorod and Kazan. From there it turns south past Samara and Volgograd. Since the initial elevation is so low, the river flows slowly, and finally enters the Caspian Sea, below sea level in a wide delta near Astrakhan.