Caves around Courtedoux offer a diverse range of underground experiences, primarily centered around the nearby Jura region. While Courtedoux itself features a religious grotto, the natural cave attractions are found in the surrounding areas. The region is characterized by its karst landscape, leading to various geological formations and subterranean features. These caves provide insights into the area's geological past and natural processes.
Last updated: October 1, 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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Well-kept dinosaur park with moderate admission. A combination ticket including the cave can also be purchased (7 degrees). The circular route is about 2km and can also be easily managed with prams. Have fun 🦕
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The Trou du Creugenat is a karst hole in the Ajoie from which water emerges and which creates a temporary river, the Creugenat, during floods. The periodic lake forms between 4 and 10 times per year, the river is sometimes only visible for a few hours, sometimes over a week. The flow can reach 15 to 20 m3/s. The water follows the Courtedoux plain and flows into the Allaine at Porrentruy. When dry, the depth of the hole is clearly visible - simple steps lead to the bottom, and a thick rope helps you climb up or down. There is a water level gauge on the side of the rock walls and you can clearly see the mud traces of the last floods. In the immediate vicinity of the hole there is also a picnic area with a table and benches, as well as an improvised fire pit. A meadow path leads from the bike path to the hole.
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An adventurous path leads through the small gorge. There are several small caves along the way and the highlight is to climb the steep step with the help of three solid wooden ladders. Only feasible for dogs if you can carry them or take them piggyback. The slippery round wood of the ladders gives even very skilful dog paws little support, so the four-legged friend needs support.
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Small road from Vaufrey am Doubs (France) to Réclère (Switzerland). At the "Pass" with restaurant, campsite, grotto and theme park. More information: http://www.prehisto.ch/index.php/fr/
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The region around Courtedoux is known for its karst landscape. The Réclère Caves are famous for their spectacular stalactites and stalagmites, including the "Dôme," a stalagmite over 15 meters high. The Milandre Caves feature an active cave system with the Milandrine river flowing through it. Additionally, the Trou du Creugenat Karst Sinkhole is a unique hydrological feature where water emerges to create a temporary river during floods.
Yes, the Réclère Caves and Prehistoric Park offer a highly family-friendly experience. The caves have a well-maintained, safe circular tour suitable for all ages, and the complex also includes a Préhisto-Parc with life-sized dinosaur reproductions, making it an engaging visit for children.
The caves around Courtedoux, particularly the Réclère Caves, maintain a cool and constant temperature year-round. This makes them a popular destination regardless of the season. However, if you plan to combine your visit with outdoor activities in the Préhisto-Parc or nearby trails, warmer, drier months might be more comfortable.
The difficulty varies. The Réclère Caves offer a well-maintained circular tour with over 500 steps, making it accessible for most visitors. In contrast, the Échelle de la Mort involves an adventurous path through a gorge with small caves, requiring climbing steep steps with wooden ladders, which is considered more challenging. The Milandre Caves are an active system, with parts explorable depending on water levels, suggesting an intermediate difficulty.
Yes, the Réclère Caves offer guided tours that enrich the visit with educational content about geology and prehistory. Explanatory panels are also available for self-guided exploration.
The region offers various outdoor activities. You can explore hiking trails, such as the moderate "Circuit des dinosaures" loop from Courtedoux, or more difficult routes like the "Échelle de la Mort" loop. Mountain biking is also popular, with routes like the "View of Haute Ajoie – Col de Montvoie loop from Porrentruy." For more options, check out the hiking guide or MTB trails guide for Courtedoux.
Due to the cool and constant temperature inside the caves, it is advisable to wear layers, even during warmer months. Comfortable walking shoes with good grip are essential, especially for areas with steps or potentially damp surfaces. For adventurous routes like Échelle de la Mort, appropriate outdoor clothing and sturdy footwear are highly recommended.
Yes, the Réclère Caves and Prehistoric Park complex includes a restaurant on-site. Additionally, the Caves Road, which leads to Réclère, also features a restaurant at the pass.
The Réclère Caves and Prehistoric Park are noted as being wheelchair accessible and suitable for prams in certain areas, particularly the Préhisto-Parc's circular route. However, the cave tour itself involves over 500 steps, which may pose a challenge for those with limited mobility. The Échelle de la Mort is not suitable for prams and challenging for dogs unless carried.
While the Préhisto-Parc at Réclère Caves might be dog-friendly, specific rules for the caves themselves should be checked directly with the venue. For the Échelle de la Mort, it is only feasible for dogs if they can be carried, as the wooden ladders offer little support for paws.
The most notable combination is the Réclère Caves and Prehistoric Park. This site offers not only the impressive natural caves but also an outdoor Préhisto-Parc featuring 45 life-sized reproductions of prehistoric animals, including dinosaurs, along a nearly two-kilometer trail through a Jura forest.


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