Kitto's Popular Cyclopedia of Biblial Literature
Ha´lah or rather Chalach, a city or district of Media, upon the river Gozan, to which, among other places, the captives of Israel were transplanted by the Assyrian kings. Many have conceived this Halah or Chalach to be the Calachene which Ptolemy places in the north of Assyria. But if the river Gozan be the Kizzil-Ozan, Halah must needs be sought elsewhere, and near that river. Accordingly Major Rennell indicates as lying along its banks a district of some extent, and of great beauty and fertility, named Chalchal, having within it a remarkably strong position of the same name, situated on one of the hills adjoining to the mountains which separate it from the province of Ghilan.
Kitto, John, ed. Entry for 'Halah'. "Kitto's Popular Cyclopedia of Biblial Literature". https://www.studylight.org/encyclopedias/eng/kbe/h/halah.html.