Best natural monuments around Saint-Brais are found within the Franches-Montagnes region, characterized by its elevated plateaus, forests, and tranquil waters. This area features notable landmarks such as the Grand Rocher and Le Plain, offering panoramic views of the surrounding landscape. The region is shaped by the Doubs River and various gorges, showcasing diverse geological formations. These natural features provide a range of outdoor experiences for visitors.
Last updated: September 30, 2026
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A detour to this natural pearl is worthwhile
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Beautiful paths lead to the lake, which is covered by a thick layer of ice in winter - it could be accessed.
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The Etang des Royes is a haven of peace, far from the crowds that can be encountered around the Etang de la Gruère. Take the time to take a break by the water and enjoy this magnificent setting in the heart of the Franches-Montagnes.
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The Etang de la Gruère nature reserve is a paradise for nature lovers. Opt for a morning hike to enjoy the calm, and to observe the rising mists over the water.
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The Source du Doubs is a powerful karst spring in a heavily karstified area of the Jura Mountains. It is located near Mouthe, in the Haut-Jura Regional Nature Park, at an altitude of 937 m at the foot of the wooded, up to 1419 m high Mont Risoux mountain range, which marks the border between France and Switzerland. The Doubs rises from a cave in the rock from a small, approximately five-meter-deep spring basin. The spring discharges an average of 1740 litres per second and is the exit of a complex cave system with several siphons. The discharge can vary greatly. Several layers of rock can be distinguished on the rock above the spring. Below the spring, the river plunges down over a small waterfall. About two kilometers below the Source du Doubs, the approximately nine-kilometer-long Cébriot flows into the Doubs.
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Imposing grotto and at the same time a place of pilgrimage. Here you should switch from the hiking trail near the bridge to the road and pause for a moment and enjoy the gentle coolness and refresh yourself with the water from the Karlsquelle (which is said to have healing powers). A small karst spring arises inside the cave. The water flows as a trickle from a stalagmite into a shallow basin. There is a crucifix under the entrance arch of the grotto, dedicated to Saint Columba of Sens, a 3rd century martyr. The place has been the destination of a pilgrimage on August 15th since the 13th century. The spring water is said to have miraculous healing powers. More: https://de.wikipedia.org/wiki/Grotte_de_Sainte-Colombe
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If you're looking for a scenic, moderate trail in the Jura region of Switzerland, you should check out Etang des Royes. There you can admire the view of the water and wildlife.
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The Plain-de-Saigne pond is a small artificial lake located in Montfaucon. It's a great place to picnic and admire the reflections of the sky and trees on the water. You can also learn about the history of the lake, which was once home to a mill and peat extraction site.
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The region around Saint-Brais is rich in diverse natural features. You can discover tranquil lake environments like Étang de la Gruère, known for its morning mists, and Étang Plain-de-Saigne, a nationally important raised bog. The powerful Doubs River carves through the landscape, visible from various viewpoints, and the Sorne River has created the dramatic Sorne Gorge (Gorges du Pichoux).
For breathtaking panoramic views, consider visiting Grand Rocher or Le Plain. Grand Rocher, at 1053 meters, offers nearly 360-degree vistas where you can see the Alps on clear days, as well as the Clos-du-Doubs and the plains of Montbéliard. Le Plain, slightly higher at 1057 meters, provides stunning views towards the south, also encompassing the majestic Alps.
Yes, several natural monuments are suitable for families. Étang de la Gruère and Étang Plain-de-Saigne are both excellent choices, offering peaceful settings for walks. The Green Lake, with its emerald color and three tributaries, provides a unique natural spectacle that children often enjoy. The Grotto of Sainte-Colombe is also a family-friendly spot, offering a cool, romantic rock cave experience.
The area around Saint-Brais is ideal for various outdoor activities. You can find numerous routes for mountain biking, cycling, and road cycling. For example, explore the Vallée du Doubs on an MTB loop, or embark on a challenging road cycling tour through the Schelten Pass and Sorne Gorge. You can find more details on these activities and routes in the MTB Trails around Saint-Brais, Cycling around Saint-Brais, and Road Cycling Routes around Saint-Brais guides.
The best time to visit depends on your interests. For a tranquil experience at Étang de la Gruère, a morning hike shortly after sunrise is recommended to witness the rising mists. The Saut du Doubs, a significant waterfall on the Doubs River, is particularly spectacular in spring and autumn due to higher water levels and vibrant foliage. Generally, spring and autumn offer pleasant temperatures for exploring the region's natural beauty.
Yes, the region offers a blend of natural beauty and history. The Grotto of Sainte-Colombe is not only a natural cave but also a pilgrimage site with a karst spring believed to have healing powers. Additionally, the area around Étang de Bollement includes caves historically recognized for their remains, notably the discovery of a Neanderthal incisor in 1955, offering a glimpse into prehistoric history.
Yes, several spots are ideal for resting and picnicking. Étang Plain-de-Saigne is a very peaceful and beautiful place with benches and tables available for visitors to relax and soak up the natural beauty. Some areas along the Doubs River also feature small beaches under trees, perfect for a break.
Visitors frequently praise the tranquility and natural beauty of the area. Many appreciate the calm atmosphere of places like Étang de la Gruère, especially during morning mists. The unique emerald color of the Green Lake and its three tributaries are also highly regarded as a 'very special natural experience.' The peaceful settings with amenities like benches and tables at Étang Plain-de-Saigne are also popular for relaxation.
For an easy and accessible visit, Étang de la Gruère and Étang Plain-de-Saigne are excellent choices. Both offer relatively flat paths around tranquil lakes, making them suitable for leisurely strolls. The Green Lake is also easily accessible and provides a beautiful, unique natural sight without requiring strenuous effort.
Many of the natural areas around Saint-Brais, including the trails around the lakes and along the rivers, are suitable for walks with dogs. While specific local rules may apply in certain nature reserves, generally, the open landscapes of the Franches-Montagnes are welcoming for dog owners. Always ensure your dog is under control and respect any posted regulations.
Access to the natural monuments around Saint-Brais is primarily by car, with various parking options available near popular sites. Public transport can get you to the village of Saint-Brais, from where some natural monuments might be reachable by foot or by connecting with local bus services. It's advisable to check specific routes and schedules for public transport to individual locations.


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