Vättern ( VET-ərn, Swedish: [ˈvɛ̌tːɛɳ]) is the second-largest lake in Sweden, after Vänern, and the sixth-largest lake in Europe. It is a long, finger-shaped body of fresh water in south central Sweden, to the southeast of Vänern, pointing at the tip of Scandinavia. Vättern is deep, containing roughly half as much water as Vänern even though it covers about a third as much area; its deepest point is 128 metres (420 ft) below sea level.
https://en.wikipedia.org/wiki/V%C3%A4ttern