Highlight • Natural Monument
Eichener Lake
Hiking
4.8
(300)
Cycling
4.5
(104)
Mountain biking
4.6
(51)
Nordic walking
5.0
(4)
Gravel riding
5.0
(1)
The Eichener See, also known in the Alemannic dialect as Eiemer See, is a truly unique natural monument nestled in the Southern Black Forest, Germany. This periodic (astatic) karst lake, situated at an elevation of 465 meters, is a geological marvel. It lies on the northeastern perimeter of the Dinkelberg ridge, between the villages of Eichen (part of Schopfheim municipality), Hasel, and the town of Wehr in the Baden-Württemberg county of Lörrach. What makes it so special is its transient nature: it only fills with water after significant snowmelt or prolonged rainfall, transforming a dry meadow into a shimmering lake.
Visitors are captivated by the unpredictable appearance of the Eichener See. It offers a rare opportunity to witness a fully formed lake in a karst landscape, a phenomenon that can last for weeks or months before the water gradually recedes. This natural spectacle, combined with its ecological significance as the only confirmed location in Germany for the rare fairy shrimp *Tanymastix lacunae*, makes it a truly memorable destination. The area's rich history and local legends also add to its allure.
Before planning your visit, it's highly advisable to check with the municipality of Hasel to confirm if the Eichener See is currently filled with water, as its appearance is entirely dependent on groundwater levels. When the lake is present, a circular path allows for easy exploration of its shores. The terrain around this natural monument is generally gentle, making it suitable for various visitors. Remember that this is a protected conservation area, so respecting the natural environment is paramount.
The best time to visit the Eichener See is typically after periods of heavy rain or significant snowmelt, when the lake is most likely to be full. This offers the prime opportunity for leisurely walks and family-friendly outings around its perimeter. Picnic and play facilities are available, enhancing its appeal for families. For those interested in geology and local history, the nearby Erdmanns Cave (Hasler Höhle) provides an excellent complementary experience, offering more insights into the region's fascinating underground world.
The Eichener See is a testament to the dynamic forces of nature, with its waters appearing and disappearing due to the soluble shell limestone bedrock. Hikers often remark on the geological wonder of this "lake that comes and goes," explaining how the water drains partly underground and partly through evaporation. The presence of the unique fairy shrimp, whose life cycle depends on the lake's periodic drying, highlights the delicate balance of this ecosystem. Local traditions, such as May 1st festivities, also add a cultural layer to the experience.
Whether you're seeking a tranquil walk through a unique landscape or hoping to witness a rare natural phenomenon, the Eichener See natural monument offers diverse experiences. You can discover a variety of hiking routes and trails around the Dinkelberg ridge and through the Southern Black Forest, perfect for exploring this distinctive region. Use komoot to plan your adventure and find the best routes for walking, hiking, or simply enjoying the serene surroundings of this remarkable periodic lake.
This Highlight is in a protected area
Please check local regulations for:
Eichener See
Tips
April 30, 2018
Hiking
After heavy rains or after the snow melts it fills with water. It can take 8 to 160 days for the lake to disappear again.
The area is under conservation. Here lives the rare in Europe leaf tuberculosis Tanymastix lacunae (sounds like one of the Gauls from Asterix).
Source: Harenberg; Local nature 2018
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March 29, 2019
Hiking
The lake, which is …
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August 31, 2021
Mountain biking
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Nearby routes
Best routes near Eichener Lake
4.7
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143
hikers
10.1km
02:50
200m
200m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.6
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108
hikers
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01:42
100m
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Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.4
(13)
59
hikers
17.9km
04:54
280m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
Details
Informations
Elevation 460 m
Weather
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Sunday 10 May
16°C
7°C
83 %
Additional weather tips
Max wind speed: 15.0 km/h
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Frequently Asked Questions
How can I check if the Eichener See is currently filled with water?
Since the Eichener See is a periodic lake, its appearance depends entirely on groundwater levels. It's highly advisable to inquire with the municipality of Hasel beforehand to confirm if the lake is currently filled. This will ensure you witness the natural spectacle.
What is the typical hiking difficulty around Eichener See?
The terrain around the Eichener See natural monument is generally gentle and flat, making it suitable for various visitors. There is a circular path around the lake itself, which is an easy walk. Longer routes in the surrounding Dinkelberg ridge may have moderate ascents but are generally well-maintained.
Are there specific parking facilities or trailhead information for Eichener See?
While the intro mentions parking, specific details are not provided. Based on common practice for natural monuments, visitors typically find parking in designated areas near the village of Eichen or Hasel. It's recommended to arrive early, especially on weekends or during peak seasons when the lake is full, as parking can fill up quickly.
Is Eichener See suitable for a winter hike?
Yes, Eichener See can be visited in winter. If there has been significant snowmelt, this is one of the times the lake is most likely to be full. However, paths might be muddy or icy, so appropriate footwear is essential. Always check local conditions before heading out.
Are dogs allowed on the trails around Eichener See?
Generally, dogs are welcome on trails in natural areas like Eichener See. However, as it is a protected conservation area, it is crucial to keep dogs on a leash at all times to protect the delicate ecosystem and wildlife, including the rare fairy shrimp when the lake is present.
What unique natural features, besides the lake itself, can be observed at Eichener See?
Beyond the fascinating periodic lake, Eichener See is home to the rare fairy shrimp species Tanymastix lacunae, the only confirmed location in Germany for this creature. When the lakebed is dry, it supports a rich community of meadow flora. The geological formation itself, a muschelkalk-karst basin, is a significant natural feature.
How long does the water typically stay in Eichener See once it fills?
The duration of the lake's presence is highly variable. Once filled, the water can remain for anywhere from 8 to 160 days before it disappears again, either draining subterraneously or evaporating. This unpredictability is part of its unique charm.
Are there any cafes, pubs, or accommodation options near Eichener See?
The Eichener See is located near the villages of Eichen and Hasel, and the town of Wehr. These communities offer local amenities, including traditional guesthouses and restaurants where you can find refreshments or accommodation. It's best to check specific opening hours and availability in advance.
What is the best way to experience the Eichener See with children?
Eichener See is considered family-friendly, especially when the lake is full. There are picnic and play facilities available, and the circular path around the lake is an easy walk for all ages. Combining a visit with the nearby Erdmanns Cave (Hasler Höhle) can make for an exciting and educational family outing.
Are there any historical or legendary aspects associated with Eichener See?
Yes, the lake has a rich history and local legends. Its existence has been recorded since at least 1771, with scientific descriptions dating back to 1782. Local legends speak of an underground palace filled with treasures, inhabited by small elves beneath the lake, and cautionary tales of farmers who broke pacts with these creatures.
What should I wear when visiting Eichener See?
Given the gentle terrain, comfortable walking shoes are generally sufficient. However, if visiting after heavy rains or during winter, waterproof and sturdy footwear is recommended due to potential mud or icy conditions. Layered clothing is always a good idea for the variable Black Forest weather.
Can I swim in Eichener See?
No, swimming in Eichener See is not permitted. The lake is a protected natural monument, and its ecosystem, particularly the rare fairy shrimp, is very sensitive. Visitors are asked to respect the conservation status and refrain from entering the water.