The range extends for about in a roughly NW/SE direction just north of the Syr Darya. The Muyunkum Desert lies to the north of the range. The Karatau is the westernmost prolongation of the Tian Shan. The summits of the mountains are smooth and the slopes are cut by snow-fed rivers. The Shabakty, Kyrshabakty, Ushbas, Bugun and Asa, are among the rivers having their sources in the range.