Lake Glubokoye (Karelian Isthmus)

Lake Glubokoye (Russian: Глубокое озеро, Finnish: Syväjärvi) is a lake located on the Karelian Isthmus in the Leningrad Oblast, Russia. It is situated near the Finnish border, north of the settlement of Kirillovskoye. The lake is characterized by its depth, which is reflected in its name (Glubokoye meaning "deep" in Russian).

The lake is known for its relatively clear water and is a popular destination for fishing and recreation. Its ecosystem supports a variety of fish species and aquatic life. The surrounding area is heavily forested, typical of the Karelian Isthmus landscape.

Historically, the area surrounding Lake Glubokoye was part of Finland before World War II. Following the Winter War and the Continuation War, it was ceded to the Soviet Union and subsequently became part of Russia. The lake and its environs retain some historical and cultural significance, reflecting the past presence of Finnish settlements and activities. Today, it is primarily a destination for those seeking nature and outdoor pursuits. Its remoteness contributes to its relatively unspoiled character.