Natural monuments around Les Enfers offer a diverse landscape for outdoor exploration. This region features a variety of natural formations, including lakes, rivers, and waterfalls. The area provides opportunities to experience preserved natural environments and geological features. Visitors can explore these sites through various trails and viewpoints.
Last updated: July 10, 2026
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Spectacular and refreshing after a walk in the sun!
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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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This restaurant is located in an absolute natural paradise. The photos with a view of the Doubs speak for themselves. Next door is one of the largest forest reserves in Switzerland. Fish and truffle dishes will revive tired hikers.
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If you want to give some inspiration to your run, you absolutely must go to the Chute du Bief de Vautenaivre. It is a majestic natural site where a small stream flows from a rocky overhang that was once a seabed. You can see ancient fossils embedded in the ceiling of the cave-like shelter. You will be rewarded with breathtaking views of the waterfall and surrounding forest.
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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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If you are looking for a superb waterfall in the Doubs, you absolutely must go to the Chute du Bief de Vautenaivre. This is a majestic natural site where a small stream plunges from a rocky overhang that was once a seabed. You can see ancient fossils embedded in the ceiling of the cave-like shelter. You will be rewarded with breathtaking views of the waterfall and surrounding forest.
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Among the most popular natural monuments, visitors frequently enjoy Étang de la Gruère, a tranquil lake and nature reserve known for its mists. Another favorite is Étang Plain-de-Saigne, a raised bog of national importance and a significant birdwatching spot. The Doubs river, which forms part of the border with Switzerland and features the impressive Saut du Doubs waterfall, is also highly appreciated.
The region around Les Enfers is rich in diverse natural features. You can explore serene lakes, winding rivers, and dramatic waterfalls. Notable examples include the tranquil waters of Étang de la Gruère, the significant raised bog of Étang Plain-de-Saigne, and the powerful Bief Waterfall, which plunges from a rocky overhang with ancient fossils.
Yes, several natural monuments are well-suited for families. Étang de la Gruère, Étang Plain-de-Saigne, and Étang de Bollement are all categorized as family-friendly lakes, offering peaceful environments for relaxation and exploration. The Doubs river also features small beaches that can be enjoyable for families.
The area around Les Enfers offers a variety of outdoor activities. You can enjoy running on trails like the 'Le Bémont - Les Enfers - Montfaucon Loop' or 'Saignelégier – Étang des Royes loop'. For mountain biking, consider routes such as the 'Vallée du Doubs MTB Loop' or 'St. Ursanne Stone Bridge – Doubs loop'. Gravel biking is also popular, with options like the 'Doubs Valley – Doubs loop'. You can find more details on these activities in the running trails, MTB trails, and gravel biking guides for Les Enfers.
Yes, many natural monuments are accessible via hiking trails. For instance, Étang de la Gruère is a nature reserve with trails perfect for morning hikes to observe mists. The Bief Waterfall is also reached via trails, offering spectacular views. The wider region provides extensive networks of trails for various fitness levels, allowing you to explore the unique panoramas and preserved natural environments.
Visitors particularly appreciate the authentic and well-preserved natural environment. They enjoy the calm and tranquility, especially at places like Étang de la Gruère, where they can observe rising mists. The opportunity for birdwatching at Étang Plain-de-Saigne and the refreshing experience of waterfalls like the Bief Waterfall are also highly valued. The dramatic geological formations and the serene escape into the wilderness are key attractions.
Yes, several natural monuments offer amenities for resting. Étang Plain-de-Saigne has benches and tables, and even a fireplace for visitors. Étang de Bollement also features a simple fireplace, making it an idyllic spot for a break surrounded by forest and meadow.
Absolutely. The Bief Waterfall is a prime example, where a stream plunges from a rocky overhang that was once a seabed, allowing you to see ancient fossils embedded in the ceiling of a cave-like shelter. The region's diverse landscape includes dramatic geological formations carved by rivers like the Doubs, showcasing the area's natural history.
The Doubs river is notable for forming part of the border with Switzerland. It features the impressive Saut du Doubs, a 27-meter-high waterfall. Uniquely, along sections of the French-Swiss border, the Doubs entirely belongs to France, a result of historical treaties. It also offers small beaches, making it a versatile natural monument for visitors.
Yes, the preserved natural environments around Les Enfers provide opportunities for wildlife observation. Étang Plain-de-Saigne, a raised bog of national importance, is specifically highlighted as a significant birdwatching spot. The nature reserves and forests surrounding the lakes and rivers are habitats for various local fauna.
Étang de la Gruère is a highly popular nature reserve known for its calm and serene environment. Visitors particularly enjoy the opportunity to observe the rising mists over the water, especially during morning hikes. It offers a paradise for nature lovers seeking tranquility and beautiful natural scenery.


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