Tingerup Tykke is the official source of the Suså River, Denmark's 5th largest river. Tingerup Tykke is located just south of Rønnede, some 20 kilometers east of Næstved.
Coordinates: 55°14′06″N 12°00′58″E / 55.23500°N 12.01611°E / 55.23500; 12.01611