The Mount of Olives or Mount Olivet (Hebrew: הַר הַזֵּיתִים, Har ha-Zeitim; Arabic: جبل الزيتون, الطور, Jabal al-Zaytun, Al-Tur) is a mountain ridge east of and adjacent to Jerusalem's Old City. It is named for the olive groves that once covered its slopes. The southern part of the Mount was the Silwan necropolis, attributed to the ancient Judean kingdom. The mount has been used as a Jewish cemetery for over 3,000 years and holds approximately 150,000 graves, making it central in the tradition of Jewish cemeteries. Several key events in the life of Jesus, as related in the Gospels, took place on the Mount of Olives, and in the Acts of the Apostles it is described as the place from which Jesus ascended to heaven. Because of its association with both Jesus and Mary, the mount has been a site of Christian worship since ancient times and is today a major site of pilgrimage for Catholics, the Eastern Orthodox, and Protestants. Much of the top of the hill is occupied by At-Tur, a former village that is now a neighbourhood of East Jerusalem.