Gruner See, Styria: A Park That Turns Into a Lake in Summer


GrĂ¼ner See, literally “Green Lake”, is a lake in Styria, Austria, near the town of Tragoss, located at the foot of the snow-capped Hochschwab mountains. During winter, the lake is only 1–2 meter deep and the surrounding area is used as a county park. It is a particular favourite site for hikers. But as the temperature starts rising in spring, the ice and snow on the mountaintops begins to melt and runs down into the basin of land below. The lake swells up to engulf the entire area including the park. During summer, the lake reaches its maximum depth of around 12 meter and is claimed to look the most beautiful at this time.

The lake gets its distinctive green colouring, and the name, from the grass and foliage beneath, and thanks to the fresh snow melt, the ice-cold water is crystal clear clear. The temperature of the lake is rather cold at 4 to 8 °C, yet it’s popular among divers who can observe the green meadows in the edge zone of the lake particularly in June when the water is at its highest. The alpine grasses and flowers of the meadow are visible in full bloom under the water. One can even see benches, a bridge and walking trails.

Starting July, the lake starts to recede and by winter, the lake is back to its original size and the park is returned once more to the hikers.






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Sources: DailyMail, Basement Geographer, Wikipedia

Also see:

The Sunken Forest of Lake Kaindy

Lake Reschensee and the Drowned Village of Graun

Qiandao Lake: The Thousand Island Lake and Ancient Submerged Cities

Floating Village of Kompong Phluk And Reversing Mekong River of Cambodia


  1. Wow what a fascinating phenomenon :D One day I'll go see that for myself.... in the summertime ;)

    Will link to this blog on my blog ;)

  2. Beautiful Beautiful

  3. That is so incredibly cool. I am definitely going to dive there if I'm in Europe again any time soon. It's so beautiful. The colour of the water and the visibility, plus the opportunity to take some really cool pictures involving the benches, would make it worth the trip to Austria alone if you were in Europe anyway. Wow. Very cool.

  4. Did I miss it but are there any of the same photos during the summer?


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