Dolinsk-Sokol (appearing in various forms as Sokol, Dolinsk-Sokol, Dolinsk Sokol, Solok [sic]) is a military air base in Sakhalin Oblast, Russia located 8 km south of Dolinsk. It is a small base with quite a few hardened hangars (aircraft shelters). It existed before June 1966 according to declassified KH-7 satellite images. Its chief operating unit was 365 IAP (365th Interceptor Aviation Regiment), flying the Su-15, MiG-23, and Su-27 during its 40 years of tenure. In the 1980s it received the MiG-31. It is also listed as being home to 361 IIVP (361st Instruction Test Helicopter Regiment) flying Mi-24 and Mi-8 helicopters.