Natural monuments around Röschlitz include diverse geological formations and natural features. The region offers opportunities to explore caves, botanical gardens, and river sources. These natural attractions provide varied landscapes for outdoor activities.
Last updated: June 18, 2026
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Depending on the water level, the lower entrance of the cave can be explored more or less dry.
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Impressive grotto under Millandre The active, vadose cave has been scientifically well studied. It is located in subhorizontal, fossil-bearing limestone. The cave river Milandrine flows through it, has a measured length of 10,520 meters and a vertical extension of 135 meters. https://de.wikipedia.org/wiki/Grotte_de_Milandre
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At this point / I would like to quickly / say something about the source And specifically to quote the incomparable humorist Heinz Erhardt (1909 - 1979), who was known to a wide audience for his wit and "Another poem", with a short four-line line: "There is certainly a lot of beauty in the element, the wet. Because you can drink the water. But you can also - not." (H.Erhardt)
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The Largue has its source in Oberlarg at an altitude of 500 m, near the Swiss border, and flows into the Ill at Illfurth after traveling 46 km. In the 19th century, it provided energy for 53 mills spread across 34 villages.
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Enormous cellar whose entrance is 4 m high. It is currently filled. It is one of the rare caves known in Alsace.
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If you stop in Porrentruy, if you are a herb, plant and flower enthusiast, you should definitely pay a visit to the Parc du Jardin Botanique. After the botanical garden in Basel, it is the second oldest in Switzerland. It is striking that in addition to the almost inexhaustible variety of plants, one or the other sundial on several house fronts shows the time in a shadowy way. A particularly idiosyncratic and modern example can be seen at the end of the park when you enter the area through the main portal. Right next to the botanical garden, there is a public car park that is subject to a fee. From the botanical garden, you can continue your journey of discovery in the direction of the old town, or pay your respects to the castle above the city.
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Over 600 local plant species from the Jura chain from Lake Biel to the Chasseral are on display. One focal point is the more than 70 varieties of roses and 180 varieties of irises, which enchant the garden in a huge sea of color when the flowers are in bloom.
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La Largue begins in the Alsatian Jura and has a length of 43 km (explanatory panel) or even 50.5 km (Office International de l'Eau) until the confluence with the Ill, at Illfurth.
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The Röschlitz area offers a diverse range of natural monuments, including fascinating caves like the Mannlefelsen Cave and Milandre Caves, significant river sources such as the Source de la Largue, and the historic Porrentruy Botanical Garden.
Yes, the region is known for its geological features. The Mannlefelsen Cave is notable for its impressive 4-meter-high entrance, while the Milandre Caves offer an extensive underground system with a measured length of over 10,500 meters, through which the Milandrine river flows.
Among the most appreciated natural attractions are the Mannlefelsen Cave, known for its unique entrance, the Source de la Largue, which marks the beginning of a 46 km river, and the historic Porrentruy Botanical Garden, one of Switzerland's oldest botanical gardens.
Absolutely. The Porrentruy Botanical Garden is a prime example, established in 1798. It's not just a natural monument but also a historical site, showcasing diverse plant species and offering insight into botanical history.
Yes, there are numerous hiking opportunities. You can find trails that explore the natural beauty of the region, including loops around the Étangs de Bonfol. For more detailed routes and options, check out the Hiking around Röschlitz guide.
Beyond hiking, the area around Röschlitz is excellent for road cycling and running. You can explore scenic routes like the 'Sundgau ponds' loop for cycling or various running trails around the Bonfol Ponds. Discover more options in the Road Cycling Routes around Röschlitz and Running Trails around Röschlitz guides.
Yes, the region offers easy walks, particularly around the Étangs de Bonfol, such as the 'Étangs de Bonfol — loop from Bonfol' which is an easy 4 km route. These are perfect for a relaxed stroll. You can find more easy options in the Hiking around Röschlitz guide.
Many of the natural monuments are suitable for families. The Porrentruy Botanical Garden and the Source de la Largue are both considered family-friendly, offering accessible and engaging experiences for all ages.
While specific natural monuments may have their own rules, many of the outdoor trails and natural areas around Röschlitz are generally dog-friendly, especially if dogs are kept on a leash. It's always advisable to check local signage for specific regulations at each site.
The best time to visit largely depends on your preferred activity. Spring and summer are ideal for enjoying the vibrant flora at the Porrentruy Botanical Garden and for hiking. Autumn offers beautiful colors, while some caves might be accessible year-round, though conditions can vary with water levels.
Visitors particularly appreciate the diverse natural beauty, from the unique rock formations and caves to the tranquil river sources and historic botanical gardens. The opportunity to immerse oneself in nature, explore geological wonders, and enjoy peaceful walks is highly valued by the komoot community.


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