Tiversk

Tiversk or Tiurinlinna is a site of ancient Karelian settlement and a ruined fortification near Melnikovo in the Karelian Isthmus. The fortification has been in use in different stages in history and it has also been described as a village. The site used to be an island of the River Vuoksi, which became a peninsula after 1857, near rapids. The island is approximately 240 metres long and 80 metres wide. ()