Gromovo, Leningrad Oblast

Petrovskoye (Russian: Петровское; Finnish: Petäjärvi) is a rural locality (a settlement) in Priozersky District of Leningrad Oblast, Russia, located on the Karelian Isthmus. Before the Winter War and the Continuation War, Petäjärvi was a prosperous village of the Sakkola municipality in Viipuri Province of Finland. In 1948, after the war, Petäjärvi was renamed Petrovskoye, but the railway station of the Saint Petersburg-Hiitola railway serving it retained its name, as there had already been another station with the name Petrovskoye in Leningrad Oblast. In 1928, not far from Petäjärvi on the Saijanjoki River, a little hydroelectric plant was constructed, which became the largest private hydroelectric facility in pre-war Finland (owned by Leonard Sääksjärvi).

Lake Sukhodolskoye (Russian: Суходольское озеро; Finnish: Suvanto-järvi) is a narrow 40 km long lake on the Karelian Isthmus located in Priozersky District of Leningrad Oblast, Russia. It is a part of the Vuoksi River basin, constituting its southern armlet, and drained by Burnaya River. Originally waters of the lake flowed into the Vuoksi through a waterway at Kiviniemi. However, in 1818 the channel that had been dug to drain spring flood waters from the lake into Lake Ladoga unexpectedly turned into Taipaleenjoki (Burnaya River), which started draining the lake itself and decreased its level by 7 m. The Kiviniemi waterway dried out. In 1857 a channel was dug there, but the stream reversed direction, revealed rapids and rendered navigation at Kiviniemi impossible. Since 1857 Lake Sukhodolskoye and Burnaya River have constituted the southern armlet of Vuoksi River, which has decreased the level of the original northern armlet flowing through Priozersk by 4 m.

The Battle of Kelja, fought from December 25 to December 27, 1939 in and around the village of Kelja (now Portovoe, Priozersky District, Leningrad Oblast, Russia), was a part of the Winter War between Finland and the Soviet Union.

Sosnovskoye Rural Settlement (Russian: Сосновское сельское поселение) is an administrative and municipal division (a rural settlement) of Priozersky District of Leningrad Oblast, Russia. Its administrative center is the rural locality (a selo) of Sosnovo. Population: 10,830 (2010 Census);

Sosnovo (Russian: Сосново; Finnish: Rautu) is a rural locality (a logging depot settlement) in Priozersky District of Leningrad Oblast, Russia, located on the Karelian Isthmus, and an important railway station of the Saint Petersburg-Kuznechnoye railroad. Population: 7,209 (2010 Census); 5,953 (2002 Census).

The Volchya (Finnish: Saijanjoki (Saejoki, Sadejoki, Suenjoki, Sudenjoki); Russian: Волчья) is a tributary of the Vuoksi on the Karelian Isthmus (Leningrad Oblast, Russia) 0.25 to 12 kilometres (0.16 to 7.46 mi) west of the Saint Petersburg-Hiitola railroad (along the section between the stations Vaskelovo and Losevo) and flowing northwards from the Lembolovo Heights. It is 50 kilometres (31 mi) long, and has a drainage basin of 460 square kilometres (180 sq mi). Its major tributaries are in turn the Smorodinka (right, Finnish: Tungelmanjoki; Russian: Смородинка), the Belaya (left, Finnish: Valkjoki; Russian: Белая), the Goryunets (left, Russian: Горюнец) and the Petrovka (right, Finnish: Petäjoki, Petojoki, Peto-oja; Russian: Петровка). The Volchya River's width is about 10 metres (33 ft) in the lower reaches, where it flows in a narrow valley, with meanders and oxbow lakes. The Volchya is shallow and unavailable for navigation (except for canoeing in some places) The river is crossed by the Sosnovo (Finnish: Rautu) – Pervomayskoye (Finnish: Kivennapa) road on Lembolovo Heights, Sosnovo – Borisovo (Finnish: Nurmijärvi) – Michurinskoye (Finnish: Valkjärvi) road at Razdolye (Finnish: Mäkrälä) and by the Losevo (Finnish: Kiviniemi) – Yagodnoye (Finnish: Vaalimo) road at the lower portion of the river. Since 1928 there is a little hydroelectric plant on the river not far from Petäjärvi (now Petrovskoye), which was the largest private hydroelectric facility in pre-Winter War Finland (owned by Leonard Sääksjärvi).[1] The entire river was a boundary between the Kingdom of Sweden and Novgorod Republic as defined in 1323 in the Treaty of Nöteborg. The higher reaches of the Saijanjoki (Volchya) to the south of the Tungelmanjoki (Smorodinka) and the Tungelmanjoki itself constituted part of the Russia-Finland border in 1811–1940. Now that stretch of the Volchya River divides Priozersky and Vyborgsky District from Vsevolozhsky District, while the Smorodinka marks another part of the boundary between Priozersky District and Vsevolozhsky District. The river was renamed from the Saijanjoki to the Volchya (lit. Wolf River) in 1948, just like the vast majority of other Finnish hydronyms and toponyms on the territories ceded by Finland to the Soviet Union as a result of the Continuation War.

Losevo (Russian: Лосево; Finnish: Kiviniemi) is a rural locality (a station settlement) in Priozersky District, Leningrad Oblast, located at the junction of Vuoksi River and Lake Sukhodolskoye on Karelian Isthmus. It is a railway station of the Saint Petersburg–Khiytola railroad. Before the Winter War and Continuation War, it was a village of the Sakkola municipality of Finland known as Kiviniemi. Originally waters of Lake Sukhodolskoye quietly flowed into Vuoksi, but in 1818, as Burnaya River had emerged and started draining Sukhodolskoye into Lake Ladoga, the level of the former decreased dramatically by 7 meters (23 ft) and the waterway connecting it to Vuoksi dried out. In 1857, the channel was dug, but the stream reversed direction, revealed rapids, and rendered navigation impossible. Since 1857 Lake Sukhodolskoye and Burnaya River have constituted the southern armlet of Vuoksi River, which has decreased the level of the original northern armlet by 4 meters (13 ft). Before the construction of Saint Petersburg-Khiytola railroad, Kiviniemi was an important river port connected to Antrea (Kamennogorsk), Käkisalmi (Priozersk), and Taipale (Solovyovo). In 1917, the railroad was constructed, and a railway bridge passed over the rapids.