The Mount of Olives (also Mount Olivet, Hebrew: הר הזיתים, Har HaZeitim; Arabic: جبل الزيتون, الطور, Jebel ez-Zeitun, Jebel et-Tur, "Mount of the Summit") is a mountain ridge to the east of Jerusalem. It is named from the olive trees with which its sides are clothed. At the foot of the mountain is the Gardens of Gethsemane where Jesus stayed in Jerusalem, according to tradition. The Mount of Olives is the site of many important Biblical events.
In the Book of Zechariah the Mount of Olives is identified as the place from which God will begin to redeem the dead at the end of days. For this reason, Jews have always sought to be buried on the mountain, and from Biblical times to the present day the mountain has been used as a cemetery for the Jews of Jerusalem. There are an estimated 150,000 graves on the Mount, including those of many famous figures. Just a few of these include the tomb of Zechariah (who prophesied there), Yad Avshalom, and a host of great rabbis from the 15th to the 20th centuries including Abraham Isaac Kook, the first Ashkenazi Chief Rabbi of Israel.
Taken from Wikipedia.org