Natural monuments around Saint-Imier are located in the Jura mountains, featuring diverse geology with limestone formations, gorges, and panoramic views. The region offers various natural areas for outdoor exploration. These features provide opportunities for recreational activities and nature observation.
Last updated: June 26, 2026
Highlight • Summit
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Highlight • Gorge
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Popular around Saint-Imier
Very pretty gorge to do with family, with friends. Accessible with an average physical level. So, nice little walk that could be followed by a navigation on Lake Bienne.
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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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A magnificent trail winds through a bucolic landscape along the gorge. Numerous walkways and galleries carved into the cliffs offer breathtaking views of waterfalls and pools. There is an entrance fee to the gorge (CHF 2 per adult and CHF 1 per child), and the trail is closed during the winter until Easter.
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A nice walk to take on a Sunday morning before the lakeside restaurant. Top !
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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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The Twannbach Gorge leads from Lamboing to Twann and owes its name to the Twannbach, which flows through this unique gorge landscape. Well-marked hiking trails lead from Magglingen over the Twannberg and from Prêles through flowering meadows and shady forests down into the gorge, which was opened up in 1892. This wild, romantic gorge is particularly popular in the hot summer months; the temperatures are pleasant and the high rocks and trees provide shade. In spring, when the Twannbach carries a lot of water, the waterfalls are particularly impressive. At the end of the gorge it suddenly becomes quieter and hikers are treated to a breathtaking view of the wine-growing village of Twann, Lake Biel, the picturesque St. Peter's Island and the snow-capped Alps in the distance. At the upper entrance to the gorge there is a glass studio with a bistro. In Twann, numerous terraces with culinary specialties and wines from the region await hungry hikers. To walk the trail safely, wear good shoes and be careful in wet, slippery areas. The trail must not be left in the nature reserve. Source https://www.bls.ch/de/freizeit-und-ferien/ausfluege/biel-seeland-twannbachschlucht
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Visitors frequently enjoy the serene Étang de la Gruère, a nature reserve perfect for tranquil morning hikes. Another favorite is the magnificent Twannbach Gorge, known for its winding trail, walkways, and views of waterfalls. The Chasseral Summit and Viewpoint also draws many for its stunning 360-degree panorama over the Alps and the Lake District.
Yes, several natural monuments are suitable for families. Étang de la Gruère offers easy, peaceful walks. The Twannbach Gorge, with its walkways and views of waterfalls, is also considered family-friendly, though it has an entrance fee and is closed in winter. The Chasseral Summit and Viewpoint is accessible and offers broad views for all ages.
The region offers a range of hiking experiences. For challenging routes, the Combe Grède Gorge features a steep, wild path with ladders, ideal for sporty climbers. The Twannbach Gorge provides an intermediate trail with stunning geological formations and waterfalls. For more relaxed walks, Étang de la Gruère offers tranquil paths through a nature reserve. Many trails lead to panoramic viewpoints like the Chasseral Summit.
The best time largely depends on the monument and desired activity. Many natural monuments, especially gorges like Combe Grède and Twannbach Gorge, are generally open from May to October, with winter closures for safety. For tranquil experiences and observing morning mists, visiting Étang de la Gruère shortly after sunrise is recommended. The Chasseral Summit is worth a trip in every season for its views.
The Jura mountains around Saint-Imier are rich in diverse geology. You can explore the steep, impressive rock basins and vertical cliffs of the Combe Grède Gorge, a deep formation typical of the limestone Jura chain. Another fascinating feature is Champ Meusel, a natural phenomenon resembling a meteor crater, though its formation is attributed to tectonic conditions, glaciation, and erosion of limestone, offering insight into complex geological processes.
Yes, some natural monuments offer winter activities. The Chasseral Regional Park, encompassing the Chasseral Summit, is suitable for cross-country skiing and snowshoe trails in winter. Mont Soleil, accessible by funicular from Saint-Imier, also provides opportunities for snowshoeing and cross-country skiing with beautiful views.
Access varies by monument. Many areas are reachable by car, often with nearby parking. For Mont Soleil, a funicular railway from Saint-Imier provides convenient access. Public transport options, such as buses, serve various points within the Chasseral Regional Park, allowing access to trailheads and natural sites.
The natural reserves around Saint-Imier are home to various wildlife. In the wild and quiet Combe Grède Gorge, you might spot chamois and marmots inhabiting the cliffs. The Chasseral Regional Park also boasts diverse natural landscapes, including forests and marshes, which support a variety of local fauna.
For magnificent panoramic views, head to the Chasseral Summit and Viewpoint. It offers a 360-degree vista over the Alps, the Swiss Lake District (Lakes Biel, Neuchâtel, and Murten), the Seeland region, and even the Vosges and Black Forest on clear days. Mont Soleil also provides picturesque landscapes and beautiful views.
Beyond hiking, the region around Saint-Imier offers diverse outdoor activities. You can find numerous road cycling routes, such as the "Tour of the Doubs Valley" or loops around Lake Biel. Running trails are also popular, including routes to the Chasseral Summit or Mont Soleil. For more details on these activities, explore the Road Cycling Routes around Saint-Imier and Running Trails around Saint-Imier guides.
Visitors frequently praise the breathtaking views from the Chasseral Summit, describing it as a fantastic 360-degree panorama. The Twannbach Gorge is loved for its 'absolutely amazing hiking experience' with numerous waterfalls. The Étang de la Gruère is cherished for its peaceful atmosphere and the unique experience of observing rising mists over the water, especially in the morning.
Yes, the Étang de la Gruère nature reserve is described as a paradise for nature lovers seeking serenity. It's an excellent spot for tranquil morning hikes, allowing visitors to enjoy the calm and observe the unique natural beauty of the wetland ecosystem and its often visible morning mists.
Absolutely. The Twannbach Gorge features numerous waterfalls and pools along its magnificent trail. Another enchanting spot is the Pilouvi Waterfalls, where the Vaux stream cascades into natural pools within a beautiful gorge, offering a magical natural site.


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