Highlight • Lake
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Grünausee is a captivating mountain lake nestled at approximately 2,340 meters above sea level in the heart of the Stubai Alps, Tyrol, Austria. Classified as both a lake and a natural monument, it offers a spectacular viewpoint within this majestic alpine region. This moraine-dammed lake, situated between the towering Sulzenaukogel and Urfallspitze, is renowned for its strikingly clear, vibrant turquoise waters, a testament to its glacial origins.
Visitors consistently praise the lake's unique and special color, often described as a…
Tips
August 18, 2020
Hiking
June 27, 2017
Mountaineering
August 19, 2020
Mountaineering
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Informations
Elevation 2,340 m
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Wednesday 11 March
-6°C
-11°C
42 %
Additional weather tips
Max wind speed: 5.0 km/h
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The most common starting point for a hike to Grünausee is the Sulzenauhütte car park. From there, the trail leads through varied terrain, including forest paths and past waterfalls, typically taking around 2.5 hours to reach the lake. Grünausee is also a significant landmark along the famous Stubaier Höhenweg (Stubai High Trail), connecting the Sulzenauhütte and Nürnberger Hütte, making it a popular stop for multi-day trekkers.
The hike to Grünausee is generally considered intermediate. You can expect a mix of terrain, starting with enchanting forest paths and passing impressive waterfalls before transitioning into high alpine landscapes. While the lake itself is easily accessible, some sections, especially if extending your hike to peaks like the Mairspitze, can be quite challenging and require good physical condition.
Grünausee can be suitable for families, especially if children are accustomed to longer hikes on varied terrain. The path from the Sulzenauhütte car park is well-trodden. For dog owners, the trails are generally dog-friendly, but always ensure your dog is on a leash, especially in alpine environments, and be prepared to carry out any waste. Remember to bring enough water for both yourself and your pet.
The primary parking area for hikes to Grünausee is the Sulzenauhütte car park. It's advisable to arrive early, especially during peak season, as spaces can fill up quickly. For public transport, you would typically take a bus to the Grawa Alm or the Sulzenauhütte car park area, which serves as the trailhead. Check local bus schedules for the Stubai Valley for the most current information.
While the intro mentions the warmer months are generally best, to truly experience Grünausee's vibrant turquoise waters at their most striking, late summer (August to early September) is often ideal. By this time, most of the snowmelt has occurred, and the lake's clarity and color are at their peak, contrasting beautifully with the surrounding alpine landscape.
Grünausee itself is in a high alpine environment and does not have direct facilities. However, the nearby Sulzenauhütte, which is about an hour's walk from the lake, offers accommodation, food, and drinks. This mountain hut serves as a popular base for hikers exploring the area and is a great spot for a break before or after visiting the lake.
While there are no official restrictions against swimming, Grünausee is a high-alpine glacial lake, meaning its waters are exceptionally cold, even in summer. The lake is fed by meltwater, so expect very low temperatures, making it suitable only for a very quick, refreshing dip for the most intrepid swimmers.
Grünausee is a fascinating example of a moraine-dammed lake. Its basin was formed and dammed by the moraines of the Wilde-Freiger glacier, with these rock masses dating back to significant glacial advances in 1850 and 1920. Historically, it was fed by the Kleiner Grünauferner glacier, which gave its waters a cloudy appearance. However, with the complete melting of this glacier, the lake's waters have become remarkably clear, showcasing beautiful color variations.
Beyond the lake's stunning turquoise waters itself, hikers often appreciate the breathtaking views of the surrounding Stubai Alps, including the impressive glacier tongue in the background. The lake is nestled between the Sulzenaukogel (2944 m) and the Urfallspitze (2805 m), offering dramatic alpine vistas. For those seeking an additional challenge and panoramic views, the climb to the Mairspitze is highly recommended.
Visiting Grünausee in winter is significantly more challenging and generally only recommended for experienced winter hikers or ski tourers with appropriate gear and knowledge of alpine conditions. The trails will be covered in snow and ice, increasing difficulty and avalanche risk. Access roads may be closed, and mountain huts like the Sulzenauhütte are typically closed during the winter season. Always check current conditions and avalanche forecasts before attempting a winter visit.
While the hike to Grünausee can take a few hours, walking around the lake itself is a relatively short and easy endeavor. It's a perfect spot for a break, and a leisurely stroll along its shores to admire the different angles and colors of the water would likely take no more than 15-30 minutes, depending on how many photo stops you make.