Grüner See

Every year this valley in Austria fills with crystal-clear meltwater, creating an underwater world

Grüner See (or Gruener See) is a spectacular lake in Austria. This lake dries up in winter, but fills up in spring with almost ten meters of crystal-clear meltwater. Where you could previously snorkel and dive.  However it is now forbidden.

The meadow is normally used as a park. It has a little bridge, a wooden bench and several footpaths. During the winter, the lake is only 1–2 m deep. However, during the spring, the temperature rises. The snow in the mountains melt and the valley below fills up with water.

The name Grüner (Gruener) See or Green Lake originated because of its emerald-green clear water. The mineral rich water is meltwater from the surrounding mountains. In summer this is a meadow, but in spring the lake reaches its maximum depth of around 12 m from mid-May to June.

The Green Lake in Austria.

This lake used to be a hotspot for divers. Until 2016 you could dive and explore the green meadows in the shallows of the lake. Particularly in June, when the water is at its highest and amazingly clear. A bridge and a bench can also be found underwater during this time. And you can find small crabs, fly larvae and different species of trout on your swim.

Video: See how beautiful it is

Since 1 January 2016 Diving and Snorkelling is forbidden

This lake was extremely popular with divers. So much so that it reached a point where the natural beauty and peace of the area has been disturbed. The local government is investigating how to re-open the lake as a diving and snorkel spot but under heavy regulation. As soon as new information is available, we will publish an update.

Visiting Grüner See

You will find the Gruener See near the village of Tragöss in Steiermark. The best time to go is late in spring (May/June).

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