Leningrad Oblast of two great lakes of the European Part of Russia, Lake Ladoga and Lake Onega. Its northeastern part, between the Gulf of Finland and Lake Ladoga, occupies the Karelian Isthmus. Some islands in the Gulf of Finland (including Kotlin, on which the city of Kronstadt has been built) and Lake Ladoga (including Konevets) also belong to the oblast. Much of the area of the oblast belongs to the drainage basin of the Neva, which is the only outflow of Lake Ladoga. Whereas the Neva, which flows to the Gulf of Finland (the city of Saint Petersburg is located in its
Finnish reconquest of Ladoga Karelia (1941) had already reached the shore of lake Ladoga at Lahdenpohja and cut the Soviet divisions north-west of lake Ladoga from their intended withdrawal routes. Near Sortavala the attacking Finnish forces of 2nd, 7th and 19th division were reorganized into the I Army Corps and the town fell to the Finnish forces on August 15. The defending Soviet forces of the 168th Rifle Division withdrew along the coast but were encircled. The Soviets managed to evacuate most of the manpower on barges over the lake Ladoga. Finns captured large amounts of war material that the Soviets had not been able to