Zechariah 14:4 New King James Version (NKJV)

And in that day His feet will stand on the Mount of Olives,Which faces Jerusalem on the east.And the Mount of Olives shall be split in two,From east to west,Making a very large valley;Half of the mountain shall move toward the northAnd half of it toward the south.

Zechariah 14

Zechariah 14:1-9