Gates, and bars - literally, “Double gates and a bar.” The stone doors of Bashan, their height pointing to a race of great stature, and the numerous cities (deserted) exist to illustrate the statements of these verses.
Related Commentaries of Deuteronomy 3:5
Deuteronomy 3:5
5 All these cities were fenced with high walls, gates, and bars; beside unwalled towns a great many.