'Valley' in the Bible

His feet will stand in that day on the Mount of Olives, east of Jerusalem. Then the Mount of Olives will be split in two from east to west, forming a very large valley, with half of the mountain moving toward the north and half toward the south.

You will run away through my mountain valley, because the valley of the mountains will extend as far as Azal. You will flee, as you fled from the earthquake during the reign of King Uzziah of Judah. And so the LORD my God will come, and all his holy ones will be accompanying you."