Best natural monuments around Klein Rönnau are characterized by a diverse landscape featuring significant natural attractions. The region is defined by its gypsum karst landscape, notably around the Großer Segeberger See and the Kalkberg in Bad Segeberg. These areas offer geological insights and opportunities for nature observation. Additionally, several nature reserves and protected areas contribute to the area's natural appeal.
Last updated: October 11, 2026
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A beautiful, naturally preserved area.
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As part of the Holstein Switzerland Nature Park, the Tarbek Moor with its special charm is a popular excursion destination that gives you a variety of impressions. With its diverse composition of ponds and vegetation-free peat banks, it offers undisturbed insights into a mysterious-looking habitat. A moor birch forest borders dark ponds surrounded by snakeroot, dead birch trees in water-filled peat pits rise picturesquely into the sky and fields of waving cotton grass are reminiscent of images from Nordic legends. In the 131-hectare area, which was previously used as a peat extraction area, remnants of this use can still be seen today and carefree cycling and hiking from the Tarbek Moor to the Ihlsee in Bad Segeberg is possible both along former routes that have been preserved to this day and along the railway embankment that connected Bad Segeberg, Bornhöved and Kiel until 1960. https://www.blunkerbach-sh.de/tarbeker-moor
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The Wittenborner Heide nature reserve remained nutrient-poor and unfertilized due to its previous use as a military training area. This resulted in a diverse landscape of heathland, moors and sparse forests that provide a habitat for many species. You can hike through a very beautiful landscape that is always worth a visit.
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The 28 hectare Ihlsee is located on the northern outskirts of Bad Segeberg and is a very special body of water: Unlike most lakes in Schleswig-Holstein, the Ihlsee is low in nutrients and lime and is therefore the habitat of extremely rare plant species in this country. Typical are the lawns of European sea larkspur, which grows from temporarily dry shore areas to a depth of around 2 m. In addition, sea quillwort and water lobelia grow in the shallow water zones, pushing their pale blue or white flowers above the water surface in summer. The Ihlsee is the last body of water in Schleswig-Holstein where the water lobelia and the shimmering luminous algae, which occur at greater water depths, occur. In total, at least 11 species of submerged leaf plants live in the Ihlsee, some of which are highly endangered. Aquatic plants can be found here as deep as 9 m. The clear water of the lake makes this possible, as sunlight can penetrate to these depths. Due to the comparatively low nitrogen and phosphorus content of the lake water, plant and animal plankton, which cloud the water in many other lakes, develop only sparsely. The Ihlwald forest, which borders the southern shore of the lake, is also part of the 42-hectare nature reserve, which is managed voluntarily by NABU Bad Segeberg. The wild Ihlwald forest can be admired from a hiking trail. The shore is quite overgrown, so unfortunately you can't see much of the lake, but it is still a beautiful path through the nature reserve. Due to the damp site conditions, a large part of the area consists of black alder swamp forests with downy birch and peat mosses, as well as ash wet forests in which stately pedunculate oaks grow. https://www.naturpark-holsteinische-schweiz.de/naturschutzgebiet-ihlsee-und-ihlwald
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The Ihlsee is located in the northwestern part of the town of Bad Segeberg, on the northern edge of the Kleinniendorf district, and is part of the designated Ihlsee and Ihlwald nature reserve. The formation of the lake has not been fully investigated. Either the depression formed after the Ice Age due to dead ice, or it originated as a sinkhole through the collapse of a cave in the Segeberg salt dome. Today, the lake has an area of approximately 29 hectares and extends 450 m in a north-south direction and approximately 850 m in a west-east direction; the shoreline length is 2.25 km. Along with the Bültsee and the Garrensee, the lake is one of the few nutrient-poor lakes in Schleswig-Holstein. The lake lies in a depression and has no inflow. It is fed only by groundwater and inflowing surface water (precipitation). North of the bathing area is the outflow, which connects the lake with the Großer Segeberger See. The lake can be circumnavigated, but there is no path directly along the shore. On the eastern shore, there is a bathing area that has existed for decades; the bathing water quality is regularly monitored and has been rated very good to good in recent years. A residential area is located on the northern shore. On the western and southern sides, the Ihlwald, a swamp forest, determines the shoreline strip. From 1911 to 1961, there was a train station at the Ihlsee for the Kiel–Segeberg narrow-gauge railway, the tracks of which were removed as early as 1962. The Ihlsee was designated a nature reserve in 1950 due to its special characteristics. The lake is a particularly nutrient-poor body of water, which results in a rare flora. Today, the lake is part of the Ihlsee and Ihlwald nature reserve and, since 2006, part of the Natura 2000 protected area network. https://de.wikipedia.org/wiki/Ihlsee
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The Tarbek Moor can be walked around in 1 hour. ... if it didn't offer so many beautiful moments to pause and take a break.
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The Ihlwald hiking trail is very popular as a dog-walking route.
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The Ihlwald is mainly a deciduous forest and therefore offers very good protection against extreme heat and light rain.
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The region around Klein Rönnau is rich in natural beauty, primarily centered on the Kalkberg, Bad Segeberg, the expansive Großer Segeberger See, and several nature reserves. These areas offer unique geological formations, tranquil waters, and protected habitats for wildlife.
You can explore the unique gypsum karst landscape, particularly at the Kalkberg, Bad Segeberg, which also features a well-known cave system. The Großer Segeberger See, formed by geological processes, is another significant natural feature. Additionally, areas like Tarbeker Moor offer distinct moorland landscapes.
Yes, there are numerous hiking opportunities. For instance, you can find routes around the Großer Segeberger See and within nature reserves like Wittenborn Heath Nature Reserve. You can explore various running trails around Klein Rönnau, including routes near the Großer Segeberger See and the Ihlsee. Find more details on Running Trails around Klein Rönnau.
Beyond hiking, the area offers excellent opportunities for cycling and mountain biking. The Großer Segeberger See is popular for water sports. You can find various cycling routes, including an easy loop from Klein Rönnau to the Watermill and Market Fountain in Bad Segeberg, or more challenging MTB trails around the Great Segeberg Lake. Discover more on Cycling around Klein Rönnau and MTB Trails around Klein Rönnau.
Absolutely. The Tarbeker Moor is known for its diverse bird species and dragonflies, with sightings of cranes and even sea eagles reported. A bird sanctuary between Stipsdorf and Klein Rönnau also provides excellent opportunities for birdwatching and nature observation.
Many natural monuments are family-friendly. For example, the Kalkberg, Bad Segeberg offers panoramic views and an educational cave system. The Wittenborn Heath Nature Reserve provides tranquil walks through forests and heather, suitable for all ages. The Lake Ihl also has a bathing area on its eastern shore, perfect for family outings.
Many natural areas and trails around Klein Rönnau are dog-friendly, especially for walks in nature reserves like Wittenborn Heath Nature Reserve and around the lakes. Always keep dogs on a leash, especially in protected areas, and be mindful of local regulations.
Visitors frequently praise the stunning panoramic views from the Kalkberg, Bad Segeberg, especially on clear days. The tranquil environment of places like Wittenborn Heath Nature Reserve for relaxing walks, and the unique geological insights offered by the gypsum karst landscape are also highly appreciated.
Parking is generally available near major attractions. For the Kalkberg, Bad Segeberg and Großer Segeberger See, parking options can be found in Bad Segeberg town center. For nature reserves like Wittenborn Heath Nature Reserve, designated parking areas are usually located at the entrances.
Yes, the Großer Segeberger See has excellent water quality suitable for swimming, with various spots along its shores. The Lake Ihl also features a bathing area on its eastern shore, which has consistently been rated with very good to good water quality.
The Rönne estuary and stone bridge at Großer Segeberger See is a picturesque spot where the Rönne river flows into the Großer Segeberger See near Klein Rönnau. A historic stone bridge allows hikers and cyclists to cross safely, offering beautiful views of the lake. The Rönne also historically powered a watermill in Klein Rönnau, which has been restored and can be visited.


Extend your search for the best caves by checking out these guides of the top ones around Klein Rönnau: