The Hula Valley (Hebrew: עמק החולה, romanized: ʿEmeq haḤūlā; Arabic: سهل الحولة, romanized: Sahl al-Ḥūlat) is a topographic depression forming a valley and fertile agricultural region in northern Israel with abundant fresh water that used to be part covered by marshland and Lake Hula. These areas were a breeding ground for mosquitoes carrying malaria and were drained in the 1950s. A small section of the valley was later reflooded in an attempt to revive a nearly extinct ecosystem. It is a major stopover for birds migrating along the Great Rift Valley between Africa, Europe, and Asia, with an estimated 500 million migrating birds now pass through the Hula Valley every year.