Highlight • Lake
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Černé Jezero, also known as Black Lake, is the largest and deepest natural glacial lake in the Czech Republic. Nestled within the stunning Bohemian Forest (Šumava) mountain range at an elevation of 1,008 meters, this iconic landmark is situated approximately 6 km northwest of the town of Železná Ruda in the Plzeň Region. Its name derives from the seemingly dark color of its waters, an optical illusion created by the reflection of dense spruce forests and a deep layer of conifer pollen sediment at its bottom.
Visitors consistently praise the mystical peace and stunning natural beauty surrounding Černé Jezero. Hikers and cyclists are drawn to its tranquil atmosphere, perfectly framed by the dramatic Jezerní stěna rock face and the ancient forest. Many describe the experience of observing nature here as profoundly purifying, making it a popular and cherished stop on various tours through the Šumava region.
Before embarking on your visit, it's helpful to know that the lake is part of a protected nature reserve, emphasizing its ecological importance. The terrain around Černé Jezero is generally accessible, with well-maintained paths. The easiest route to the lake typically starts from Špičácké sedlo, about 3.5 km away, offering a path suitable for pedestrians, cyclists, and even wheelchair users, making it a family-friendly option. For those seeking a longer adventure, combining a visit with the nearby Čertovo Jezero (Devil's Lake) is also possible via more demanding trails.
The best time to visit Černé Jezero largely depends on your preferred activities. During warmer months, the area is ideal for hiking and cycling, with lush greenery and pleasant temperatures. The vibrant autumn colors also offer a spectacular backdrop for exploration. In winter, the snow-covered landscape transforms the Black Lake into a serene wonderland, inviting those interested in winter hiking or snowshoeing, though conditions require appropriate gear.
The lake's unique features extend beyond its natural beauty. It is a product of the Würm glaciation, formed thousands of years ago, and its waters are oligotrophic, meaning they are low in nutrients. The European water divide runs just above the lake on Jezerní hora, a fascinating geographical detail as Černé Jezero's waters flow towards the North Sea, while Čertovo Jezero's drain into the Black Sea. The area is also home to a historical pumped-storage hydroelectric plant, built in the 1920s, adding a layer of technical heritage to the natural landscape.
Beyond its natural and historical significance, Černé Jezero has inspired numerous artists and writers, and legends speak of its mysterious depths. The dense spruce forests and the dramatic Jezerní stěna cliff create a truly immersive experience, allowing visitors to connect deeply with the wild heart of the Bohemian Forest. It's a place where you can truly appreciate the raw power and delicate balance of nature.
Whether you're looking for a leisurely stroll or a challenging trek, there are many ways to explore this remarkable destination. Discover a variety of Černé Jezero trails and routes, from easy walks to more demanding hikes, suitable for all levels of outdoor enthusiasts. With komoot, you can easily find and plan your perfect adventure, whether you're interested in hiking, cycling, or simply enjoying the stunning viewpoints around Černé Jezero.
This Highlight is in a protected area
Please check local regulations for:
CHKO Šumava
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November 30, 2020
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Nearby routes
Best routes near Černé Jezero (Black Lake)

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(32)
130
riders
57.6km
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1,350m
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Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
Details
Informations
Elevation 1,020 m
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Yes, the main path leading to Černé Jezero from Špičácké sedlo (approximately 3.5 km) is generally well-maintained and suitable for both wheelchairs and strollers, making it a family-friendly option for many visitors.
Dogs are generally welcome on the trails around Černé Jezero, but as it's part of a protected nature reserve, it's crucial to keep them on a leash at all times. This helps protect the local wildlife and ensures a pleasant experience for all visitors. Always clean up after your pet.
The nearest town is Železná Ruda, which has train and bus connections. From Železná Ruda, you can often find local bus services or taxis to Špičácké sedlo, which is the most common starting point for the hike to Černé Jezero. Check local schedules as they can vary seasonally.
While there are no direct amenities right at the lake itself due to its protected status, you'll find various cafes, pubs, restaurants, and accommodation options in the nearby towns of Železná Ruda and Špičák. These towns serve as excellent bases for exploring the Šumava region.
Winter transforms Černé Jezero into a serene, snow-covered landscape, offering a unique hiking experience. However, conditions can be challenging. Trails may be icy or covered in deep snow, requiring appropriate gear such as sturdy winter boots, microspikes, or snowshoes. Always check weather forecasts and trail conditions before heading out.
No, swimming is generally not permitted in Černé Jezero. As a protected natural reserve and a glacial lake with unique ecological characteristics, activities like swimming are restricted to preserve its pristine environment and rare species.
Černé Jezero is home to rare species of plants and animals. You might spot arctic-alpine flora on the north-facing cliff above the lake, and rare invertebrates inhabit its waters. The surrounding spruce forests are part of the Šumava National Park, offering a chance to observe various forest birds and mammals, though many are shy.
While the main trail offers stunning views, some hikers enjoy exploring the slightly more challenging paths that ascend parts of the Jezerní hora cliff for different perspectives of the lake and the surrounding forest. Always stick to marked trails to protect the fragile ecosystem and for your safety.
Černé Jezero is a prime example of a glacial lake, formed during the Würm glaciation approximately 10,000 to 12,000 years ago. Its unique 'black' appearance is due to the reflection of dense spruce forests and a deep, nine-meter layer of conifer pollen sediment at its bottom. It also lies on the European water divide, with its waters flowing towards the North Sea.
The most popular and easiest route to Černé Jezero starts from Špičácké sedlo, covering about 3.5 km one way. This path is relatively flat and well-maintained, making it suitable for most fitness levels. For those seeking a longer and more challenging hike, combining a visit with the nearby Čertovo Jezero (Devil's Lake) involves more demanding trails and greater distances.
While there isn't a direct circular path that goes all the way around the lake's immediate shoreline due to the steep Jezerní stěna cliff, you can create circular routes by combining trails in the broader area. For instance, a popular option is to hike to Černé Jezero and then continue to Čertovo Jezero, returning via a different path to Špičácké sedlo or Železná Ruda, forming a longer loop.