Best natural monuments around Altkirch are found within the Sundgau region in southern Alsace, characterized by its extensive forests, rolling hills, and valleys. The area offers diverse natural features, including caves, viewpoints, and ancient trees. These natural settings provide opportunities for exploring the region's varied landscapes and historical sites. The Ill and Largue rivers also contribute to the natural heritage of the area.
Last updated: May 20, 2026
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A lovingly furnished grotto for the little dwarves
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Added to the collection: komoot.com/de-de/collection/3600632/-naturdenkmaeler-besondere-baeume-und-weitere-schaetze-der-natur
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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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A small entrance gives access to this fairly deep cave. It owes its name to Doctor Herrings, a village doctor with a passion for caving who died here following a landslide in 1914.
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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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The Allée des Hêtres is made up of a remarkable alignment of around 40 trees, each over 150 years old. It undoubtedly offers one of the most beautiful views of the Alsatian Jura over the neighboring Swiss Jura.
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The region around Altkirch, particularly the Sundgau, offers a diverse natural landscape. You can discover impressive caves like the Dwarves' Grotto, which forms a 25-meter high gorge, and the Mannlefelsen Cave, one of Alsace's rare known caves. There are also significant ancient trees such as Le Gros Chêne de Sondersdorf, also known as the Napoleon Oak, and the Mightiest Beech Tree in the Canton of Solothurn. Additionally, you can visit river sources like the Source de la Largue and the Source de l'Ill.
Yes, the area boasts several excellent viewpoints. The Loechle Rock offers ingenious views of the surrounding landscape and is said to have been a site for Druidic practices. The Rossberg Observation Tower, though not a natural monument itself, provides exceptional panoramic views of the Jura Mountains, Black Forest, Vosges, and even the Bernese Alps on clear days, and is often included in popular hiking routes.
Many natural sites in the Altkirch area have historical connections. The Dwarves' Grotto is steeped in local legend, believed to be home to the 'little women of the earth'. The Loechle Rock is associated with ancient Celtic Druidic practices. You can also find the Dr. Herrings' Cave, which is categorized as both a natural monument and a historical site. The Motte Castrale de Willer, a historical site, also offers a viewpoint within a natural setting.
Absolutely. Several natural monuments are suitable for families. The Source de la Largue and the Source de l'Ill are both listed as family-friendly. Additionally, the area around the Mightiest Beech Tree in the Canton of Solothurn offers an accessible natural experience for all ages.
The Sundgau region is ideal for outdoor activities. You can enjoy extensive hiking, cycling, and mountain biking on various routes. For hiking, consider trails like "The Château de Ferrette, the Grotte des Nains and the Tour du Rossberg" or "Wolschwiller and the Raemelsberg crest." Cyclists can explore routes such as "On the Trail of Lucelle Abbey" or the "Largue Valley Cycle Route." You can find more details on these activities and routes in the hiking guide, cycling guide, and road cycling guide for Altkirch.
Yes, many trails incorporate natural monuments. For instance, the popular route "The Château de Ferrette, the Grotte des Nains and the Tour du Rossberg" (8.5 km) includes the Dwarves' Grotto. Other trails like the Schweighof trail via Breitholz (10 km) and the Altkirch heights trail (8 km) also allow you to immerse yourself in the natural beauty of the Sundgau. You can find more hiking options in the hiking guide for Altkirch.
The natural monuments around Altkirch can be enjoyed throughout the year, with each season offering a unique experience. Spring brings lush greenery and blooming flora, while summer is ideal for longer hikes and outdoor activities. Autumn showcases vibrant fall colors, especially in forested areas like the Allée des Hêtres. Winter offers a tranquil, often snow-covered landscape, suitable for those who enjoy crisp, quiet walks.
The Sundgau, with Altkirch at its heart, is characterized by its bucolic and hilly terrain, extensive forests, and picturesque valleys carved by the Ill and Largue rivers. This diverse landscape provides a gentle yet engaging way to discover the countryside, offering tranquil bodies of water, undulating hills, and charming villages often nestled within these natural surroundings. It's a region where nature and culture intertwine seamlessly.
While the Dwarves' Grotto and Loechle Rock are popular, exploring the network of trails can lead you to lesser-known spots. The Dr. Herrings' Cave, for example, offers a unique combination of natural gorge and historical significance. The region's many forest paths and secondary roads often reveal quiet corners and unexpected natural beauty.
Visitors particularly appreciate the opportunity to engage with a preserved natural setting. The diverse ecosystems, charming villages, and historical sites often nestled within these natural surroundings are highly valued. The panoramic views from elevated points, the well-maintained paths, and the tranquil environment make it an ideal destination for active relaxation and a deep connection with nature.


Find even more amazing natural monuments around Altkirch by checking out the top Highlights region by region:
Extend your search for the best caves by checking out these guides of the top ones around Altkirch: