Gruener See

Also known as Green Lake

A small Alpine lake near Tragoess in Styria famous for its extraordinary emerald-green clarity. In late spring and early summer, snowmelt from the Hochschwab massif floods the surrounding meadow and park benches, creating the viral "underwater park" images. By late summer the lake shrinks to a pond.

The Gruener See near Tragoess in Styria floods each spring when snowmelt from the Hochschwab massif submerges the surrounding meadow, creating the extraordinary emerald-green underwater park that made the lake famous. Peak water levels run from May to early June. By late summer the lake shrinks to a small pond and the meadow returns to dry ground. The circular walk is about 30 minutes. Swimming and diving have been banned since 2016 to protect the ecosystem. Access is free; parking fees apply at the Tragoess car park. No direct public transport; best reached by car from Bruck an der Mur.