Toplitzsee (TILOS / no diving)
Diving is prohibited. The Toplitzsee near Gössl (Grundlsee) belongs to the Österreichische Bundesforste and has been a nature reserve since 1991; apart from one traditional flat boat to the east shore, boats and water-sports gear are not allowed either. The lake is about 103 m deep and has no dissolved oxygen below roughly 20 m. It is famous for the Second World War: in 1959 boxes of forged British banknotes were recovered, and sunken logs at mid-depth make deeper diving hazardous.
Tiefe: