The Karelian Isthmus is a narrow strip of land located between the Gulf of Finland to the south and Lake Ladoga to the north. It connects the Karelia region of Finland with Russia. The area is known for its diverse landscapes, including forests, lakes, and rivers, making it a significant ecological zone. Historically, the Karelian Isthmus has been a site of conflict and territorial changes, especially during the Winter War and the Continuation War between Finland and the Soviet Union. Today, it is part of Russia and features several towns, including Vyborg, which reflects its rich cultural heritage.