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Green Lake
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Green Lake, located in the municipality of Tragöß in Styria, is a unique karst lake situated at the foot of the Hochschwab mountains. Each spring, the lake basin fills with crystal-clear snowmelt from the surrounding limestone peaks, flooding the meadows and hiking trails of the valley floor. During this period, benches and footbridges can be found several meters underwater, creating a surreal submerged landscape that gained international fame. The lake's distinctive emerald green color is a result of the pure water and the submerged green vegetation. Since it is entirely dependent on snowmelt, the water level fluctuates dramatically throughout the year, peaking in early June and nearly disappearing by late autumn. To preserve the delicate ecological balance and the clarity of the water, a total ban on diving, swimming, and boating was implemented in 2016, ensuring that the site remains a protected natural monument.
- Location: Styria, Austria
- Top sights: Naturschutzgebiet Grüner See · Edelweißboden · Pribitz
- Nearby: Trofaiach (13 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | -4 | -3 | 1 | 6 | 10 | 14 | 16 | 16 | 11 | 7 | 2 | -3 |
| Rain mm | 58 | 53 | 61 | 60 | 118 | 142 | 149 | 152 | 113 | 79 | 62 | 56 |
📋 Practical info
Getting there
The Grüner See is typically accessed from the village of Tragöß, often serving as the starting point for visitors heading into the Hochschwab mountains. A well-marked trail usually leads directly from the valley up to the alpine lake.
Best season
Spring and early summer are usually the best times to visit when the snowmelt raises the water levels, creating its famous crystal-clear green appearance. Winter months can bring heavy snow, making the trails much harder to navigate.
Terrain & paths
The surrounding paths are generally well-maintained and mostly flat near the water, though the wider region features rugged alpine terrain. Exploring the higher trails requires a good level of fitness and surefootedness.
What to bring
Sturdy hiking boots are highly recommended for the rocky alpine paths, along with layered clothing to adapt to sudden temperature changes. Bringing a reliable rain jacket and sufficient drinking water is always a good practice here.
Parking
Dedicated visitor parking is typically available near the edge of Tragöß, acting as a trailhead for the walk to the lake. During peak season, arriving early is advisable as these parking areas can fill up relatively quickly.
Safety
Keep in mind that swimming is usually prohibited to protect the fragile ecosystem of this unique body of water. Stay on the marked trails to avoid accidents on the steep mountain slopes and always check local weather updates.
Time needed
A typical visit to simply walk around the immediate lake area generally takes about one to two hours of easy strolling. Those venturing further up into the Hochschwab mountains should comfortably allocate a half or full day.
Geography
Facts
- The maximum water depth reaches approximately 12 meters in early summer.
- Water temperature remains consistently cold between 6 and 7 degrees Celsius.
- Underwater visibility can reach up to 50 meters due to the purity of the meltwater.
- A total ban on diving and swimming has been in effect since January 1, 2016.
- In 2014, the lake was voted the most beautiful spot in Austria in a national poll.
- The lake is situated at an elevation of approximately 776 meters above sea level.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
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© OpenStreetMap contributors · OpenRouteService
Sights in the town Green Lake (6)
Sights nearby
Frequently asked questions
When is the lake most beautiful?
Visit in May or June when the water level is highest after the snowmelt.
Is swimming or diving allowed in the lake?
No, to protect water quality and nature, all water sports have been banned since 2016.
Are there parking spaces nearby?
There is a large paid parking lot in Tragöß, about a 15-20 minute walk away.
How cold is the water?
The water is crystal clear and extremely cold, around 6 to 7 degrees Celsius.
Are there places to eat?
Yes, there are inns serving regional cuisine directly at the lake and in Tragöß.
Green Lake: where is it located?
Green Lake is located in Styria, Austria.
Green Lake: what is there to see?
Highlights include Naturschutzgebiet Grüner See, Edelweißboden, Pribitz.
Green Lake: when is the best time to visit?
The most pleasant time to visit is Jun, Aug.
Green Lake: why is it worth visiting?
Green Lake, located in the municipality of Tragöß in Styria, is a unique karst lake situated at the foot of the Hochschwab mountains.
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