Zechariah 14

4 And his feet shall stand in that day upon the mount of Olives, which [is] before Yerushalayim [Foundation of Peace] on the east, and the mount of Olives shall cleave (split open; cut open; divide) in the midst thereof toward the east and toward the west, [and there shall be] a very great valley; and half of the mountain shall remove toward the north, and half of it toward the south.