Rosh HaAyin (Hebrew: רֹאשׁ הָעָיִן Hebrew pronunciation: [ˌroʃ häˈʔä.in], lit. Fountainhead) is a city in the Center District of Israel. To the west of Rosh HaAyin is the fortress of Antipatris and the source of the Yarkon River. To the southeast is the fortress of Migdal Afek (Migdal Tzedek).