'Open Country' in the Bible

my mountain in the open country, I will give your wealth, all your treasures, for spoil, your high places, because of [your] sin, throughout all your territories.

When all the commanders of the armies who [were] in the open country and their men heard that the king of Babylon had appointed Gedaliah the son of Ahikam [in an official position] in the land, and that {he had put him in charge of} men, and women, and little children, and of the poor of the land, of [all those] who had not been deported [to] Babylon,

And Johanan the son of Kareah and all the commanders of the armies who [were] in the open country came to Gedaliah [at] Mizpah