Rubtsovsk is a city in Altai Krai, Russia, located on the Aley River 281 kilometres southwest of Barnaul. Population: 147,002 ; 163,063 ; 171,792 ; 167,000 ; 111,000 ; 75,334.

Kamen-na-Obi, known until 1933 as Kamen, is a town in Altai Krai, Russia, located on the left bank of the Ob River 208 kilometers northwest of Barnaul, the administrative center of the krai. As of the