'Valley' in the Bible

In the night I saw [a vision] and behold, a Man was riding on a red horse, and it stood among the myrtle trees that were in the ravine; and behind Him were horses: red, sorrel (reddish-brown), and white.

In that day there shall be a great mourning in Jerusalem, like the mourning of [the city of] Hadadrimmon in the Valley of Megiddo [over beloved King Josiah].

In that day His feet shall stand on the Mount of Olives, which lies before Jerusalem on the east; and the Mount of Olives will be split in half from the east to the west by a very large valley, and half of the mountain will move toward the north and half of it toward the south.

You will flee by the valley of My mountains, for the valley of the mountains will reach to Azel; and you will flee just as you fled from the earthquake in the days of Uzziah king of Judah. Then the Lord my God will come, and all the holy ones (believers, angels) with Him.