Dolinsk

Dolinsk is a town and the administrative center of Dolinsky District of Sakhalin Oblast, Russia, located in the southeast of the Sakhalin Island in the valley of the Naiba River and its tributaries, about 45 kilometers north of Yuzhno-Sakhalinsk and 10 kilometers from the coast of the Terpeniye Bay of the Sea of Okhotsk. The present site of the town was the location of the Ainu settlement Ziancha until 1884, when the Russian village of Galkino-Vraskoye was founded.citation needed The Treaty of Portsmouth saw it transferred to Japanese control in 1905, along with the rest of southern Sakhalin.

It was given machi town status by the Japanese, under the name Ochiai. The Red Army retook control of the whole of Sakhalin in 1945, during the closing stages of World War II. In 1946, the town received its present name, roughly translating as town in the valley. Since the 1940s, the town's population has decreased by more than half, from a high of 25,135 in 1941 down to 12,200 inhabitants recorded in the 2010 Census.