Natural monuments around Clairvaux-Les-Lacs, situated in the Jura Mountains of France, present a landscape featuring lakes, waterfalls, and forests. The area is notable for the Lakes of Clairvaux, including the Grand Lac, which holds historical significance with prehistoric pile-dwelling sites. Nearby, the Hérisson Waterfalls form a series of cascades within a natural setting. The region also offers various panoramic viewpoints overlooking its diverse natural environment.
Last updated: July 4, 2026
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Swim and hike – grand Tour of France's Jura lakes in the Western Alps
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The Saut de la Saisse is a waterfall in France located in the Jura massif, at the point where the Ain river flows into the Vouglans reservoir at Pont-de-Poitte and Patornay, between Lons-le-Saunier and Clairvaux-les-Lacs. A "marmite du diable", "marmite de géant" or "marmite glaciaire" in Switzerland (or simply "marmite" or "chaudron") is a more or less cylindrical natural cavity carved into the rock by ancient, generally torrential watercourses, carrying pebbles or gravel, which promotes swirling erosion (a phenomenon called "marmitage").
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A waterfall with a larger pool and a smaller cascade in a beautiful setting. In front of it is a small stone lynx statue.
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View of the Cascade de L'Eventail. A small, rocky path leads directly to the waterfall.
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Beautiful view of the central waterfall Cascade Du Hérisson with several cascades.
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Lac d'Ilay, also called Lac de la Motte, is a lake in the Jura department of France, about 14 km south of Champagnole in Franche-Comté. It lies at an altitude of 774 m in the municipalities of Le Frasnois and La Chaux-du-Dombief and covers an area of approximately 0.7 km². The lake is 1.9 km long, has a maximum width of 400 m, and has a small island (Île de la Motte). Its greatest depth is 32 m.
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Great view of the Ain, this is where the Lac de Vouglans begins. When the water level is high, the stones are of course not so easy to see.
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The region is characterized by its beautiful lakes and impressive waterfalls. Key attractions include the Hérisson Waterfalls, a series of cascades, and the serene Lakes of Clairvaux, particularly the Grand Lac, known for its clear waters and historical significance.
Yes, several natural sites are suitable for families. The Grand Lac de Clairvaux features a sandy beach with gentle slopes, ideal for swimming, and has a 'handiplage' label for accessibility. Lake Ilay is another family-friendly option, offering an easy walk around its shores.
The Grand Lac de Clairvaux is surrounded by over 18 prehistoric pile-dwelling sites dating back to the Neolithic period, two of which are UNESCO World Heritage sites. These sites provide rare evidence of early farming and fishing communities, with an exhibition in Clairvaux-les-Lacs showcasing models and a replica of a Neolithic house.
The Hérisson Waterfalls are a must-see. Within this series, the Fan Waterfall is well-known for its height and stepped layout, offering a secure observation platform. The Saut Girard Waterfall also features a larger pool and a smaller cascade in a picturesque setting.
Absolutely. The Hérisson Waterfalls can be explored via a seven-kilometer path starting from Menétrux-en-Joux. Additionally, you can find various walking routes around the lakes, such as the easy path around Lake Ilay. For more options, explore the Running Trails around Clairvaux-Les-Lacs guide.
Summer is popular, especially for the Lakes of Clairvaux, where the water can reach around 25°C, making it ideal for swimming. The waterfalls are often most impressive after rainfall, so spring or autumn can offer spectacular views. For fewer crowds, consider visiting outside of peak summer months.
Yes, the region offers trails for both mountain biking and cycling. You can find routes that pass by natural monuments and offer scenic views. Check out the MTB Trails around Clairvaux-Les-Lacs and Cycling around Clairvaux-Les-Lacs guides for detailed routes.
Yes, the region is known for its panoramic viewpoints. The 'Four Lakes panoramic viewpoint' is highly recommended for breathtaking vistas of the lakes, peat bogs, and forests, offering stunning perspectives of the diverse natural environment.
The Grand Lac de Clairvaux is special for its beautiful turquoise and emerald waters, especially in good weather. It features a Blue Flag-certified sandy beach, making it excellent for swimming and relaxation. Its historical significance, with UNESCO-listed prehistoric pile-dwelling sites, also adds to its unique appeal.
Beyond the lakes and waterfalls, the region's geology is marked by cliffs and rock formations, particularly around areas like Lac de Vouglans. Here, you can find Moss-Covered Rocks in the Forest near Lac de Vouglans, showcasing a unique blend of mineral and vegetal elements.
When visiting the Hérisson Waterfalls, it's recommended to wear appropriate footwear for walking on potentially rocky or damp paths. The waterfalls are most spectacular after rainfall, so consider this for your visit. There are signposted footpaths that allow you to admire the magnificent scenery.
Visitors frequently appreciate the stunning natural beauty, particularly the dramatic waterfalls and the serene, clear waters of the lakes. The opportunity for outdoor activities like hiking and swimming, combined with the historical depth of the prehistoric sites, makes the region a diverse and engaging destination.


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