'Atroth addar' in the Bible

And the border of the sons of Ephraim is by their families; and the border of their inheritance is on the east, Atroth-Addar unto Beth-Horon the upper;

and the border hath gone over thence to Luz, unto the side of Luz (it is Beth-El) southward, and the border hath gone down to Atroth-Addar, by the hill that is on the south of the lower Beth-Horon;