a balneological health resort in Chita Oblast, RSFSR, situated at an elevation of 790 m in the Kislye Kliuchi River valley, 65 km southwest of Chita and 7 km from the Lesnoi railroad station.

The climate is markedly continental; the summers are moderately warm (average July temperature, 16°C), and the winters are cold (average January temparature, –23°C). Annual precipitation, 300–350 mm. Medical treatment employs a carbonic ferruginous spring with the chemical formula

It is used for bathing, drinking, and bottling. Patients with digestive disorders are treated at Kuka. The resort has a sanatorium and a bathhouse.