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Espace Mittelland
District de Delémont

Mettembert

Top 14 Natural Monuments around Mettembert

Best natural monuments around Mettembert are found within the picturesque Jura region of Switzerland, offering access to diverse natural attractions. Mettembert is nestled amidst unspoiled landscapes, characterized by open pastures and pine forests, making it a desirable destination for nature enthusiasts. The area provides an excellent base for exploring the varied and preserved natural landscapes of the Jura Mountains. Visitors can experience the serene environment through activities like hiking and enjoying the region's natural beauty.

Best natural monuments around Mettembert

Last updated: June 26, 2026

Lucelle Lake

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Beautiful lake right on the border with France. The banks, overgrown with reeds and trees, give the water a wild and romantic character. Here you can unwind in nature and watch waterfowl such as ducks and gray herons.

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Le Gros Chêne de Sondersdorf

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Called big oak or Napoleon oak, this tree in old age, perhaps 400 or even 500 years old was already spotted in 1912 by foresters as a remarkable tree.

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Source de la Largue

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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 …

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Alt-Biederthal Castle Ruins

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Only a few remains of the castle walls remain, but the rocky outcrop is impressive and can be climbed with a little skill.

Most of the stones were then used for the nearby Biederthal Castle.

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La Fille de Mai Rock Formation

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La Fille de Mai is an amazing rock formation located near the village of Lucelle. This impressive monolith resembles a woman wearing a long dress and a hat. According to …

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Jockel
January 31, 2026, Le Gros Chêne de Sondersdorf

Added to the collection: komoot.com/de-de/collection/3600632/-naturdenkmaeler-besondere-baeume-und-weitere-schaetze-der-natur

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Ralph
June 16, 2025, Lac de Lucelle

Idyllically situated at the end of the Lützeltal.

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While the prosperous times in the town of Lucelle are over, the Lac de Lucelle is a nature reserve that captivates with its peace, idyll and beauty. The lake can be easily walked around on a well-developed nature trail, and there are many benches where you can watch the ducks and fish in the lake.

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I could no longer see any ruins on this overgrown rock. The narrow path, which seems to be taken from a fairy tale book, leads to Biedertal Castle, but is always worth a visit. Once you arrive at the castle grounds, it is not immediately clear where the path continues. If you want to visit the castle rock cave, the narrow path leads through the buildings and down into the forest. The cave itself exudes a very special atmosphere.

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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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Paul_C
December 11, 2023, Lac de Lucelle

Lake Lucelle is the smallest in Switzerland and is located in a protected natural area near the French border. The trail around the lake is a comfortable and mostly flat 2km loop, with only 30m of elevation gain and loss. You can enjoy the view of the sparkling water, colorful vegetation and secluded houses on the other side of the lake. Whether you want to run fast or slow, Lake Lucelle offers a delightful experience for trail runners of all levels.

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Paul_C
December 8, 2023, La Fille de Mai

La Fille de Mai is an amazing rock formation located near the village of Lucelle. This impressive monolith resembles a woman wearing a long dress and a hat. According to legend, she is a princess transformed into stone by a witch.

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Frequently Asked Questions

What natural features can I see around Mettembert?

The area around Mettembert, nestled in the Jura region, offers a variety of natural features. You can explore tranquil lakes like Lucelle Lake, which is the smallest in Switzerland and known for its protected natural area and waterfowl. There are also impressive geological formations such as La Fille de Mai Rock Formation, and ancient trees like Le Gros Chêne de Sondersdorf, a remarkable oak tree estimated to be 400-500 years old.

Are there family-friendly natural monuments around Mettembert?

Yes, several natural monuments are suitable for families. Lucelle Lake offers a comfortable and mostly flat 2km loop trail, perfect for a leisurely walk with children. The Source de la Largue, a natural spring, is another family-friendly spot to visit.

What outdoor activities can I do near the natural monuments around Mettembert?

The region around Mettembert is ideal for various outdoor activities. You can enjoy extensive hiking, cycling, and mountain biking. For specific routes, explore guides like Gravel biking around Mettembert, MTB Trails around Mettembert, or Cycling around Mettembert. These guides offer routes ranging from easy to difficult, allowing you to explore the diverse landscapes.

Are there hiking trails near these natural monuments?

Absolutely. The Jura region, where Mettembert is located, is renowned for its hiking opportunities. You can find trails around natural monuments like Lucelle Lake, which has a pleasant 2km loop. Many other trails connect to the natural beauty of the area, offering diverse landscapes from forests to open pastures. For more hiking options, consider exploring the broader guides for cycling and mountain biking, as many routes can also be enjoyed on foot.

What do visitors particularly enjoy about the natural monuments near Mettembert?

Visitors appreciate the serene and wild character of the natural monuments. For instance, at Lucelle Lake, people enjoy unwinding in nature and observing waterfowl. The ancient Le Gros Chêne de Sondersdorf inspires awe for its age and resilience. The impressive La Fille de Mai Rock Formation captivates with its unique shape and local legend.

Are there any unique rock formations to explore near Mettembert?

Yes, one of the most notable is La Fille de Mai Rock Formation. This impressive monolith near Lucelle is said to resemble a woman in a long dress and hat, and is associated with a local legend of a princess transformed into stone. Additionally, the rocky outcrop of Alt-Biederthal Castle Ruins, while primarily a historical site, offers an impressive geological feature that can be climbed.

Are there any ancient trees or historical natural sites to visit?

Definitely. The most prominent ancient tree is Le Gros Chêne de Sondersdorf, also known as the Napoleon oak. This magnificent tree is estimated to be 400 to 500 years old and stands as a living testament to the region's natural history. While not purely natural, the Alt-Biederthal Castle Ruins are set on an impressive rocky outcrop, blending natural and historical elements.

Where can I find tranquil waters or lakes near Mettembert?

For tranquil waters, Lucelle Lake is an excellent choice. It's the smallest lake in Switzerland, located in a protected natural area, and its reed-overgrown banks create a wild and romantic atmosphere perfect for unwinding and observing waterfowl. The wider Jura region also features other natural water bodies, contributing to its serene environment.

Are there any natural springs or rivers to discover?

Yes, you can visit the Source de la Largue. This natural spring is where the Largue river originates in Oberlarg, near the Swiss border. It's a peaceful spot that highlights the natural hydrology of the region.

Are the trails around Mettembert's natural monuments suitable for dogs?

While specific dog-friendly designations for every trail are not always available, the Jura region generally welcomes dogs on trails, provided they are kept on a leash and owners clean up after them. The 2km loop around Lucelle Lake is a comfortable walk that many dog owners enjoy. Always check local signage for any specific restrictions.

What is the best time to visit the natural monuments around Mettembert?

The Jura region, including the area around Mettembert, is beautiful year-round. Spring and summer offer lush greenery, wildflowers, and pleasant temperatures for hiking and outdoor activities. Autumn brings vibrant fall foliage, while winter transforms the landscape into a serene, snow-covered wonderland, suitable for winter walks. The best time depends on the activities you plan to do.

Are there viewpoints offering panoramic views of the Jura landscape?

Yes, the Jura region is known for its scenic viewpoints. While Mettembert itself is a base for exploration, many trails in the wider Jura Mountains offer panoramic views from ridges and elevated spots. For example, the La Fille de Mai Rock Formation is also considered a viewpoint, and the Alt-Biederthal Castle Ruins, perched on a rocky outcrop, can offer impressive vistas if you're able to climb it.

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

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