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Switzerland
Espace Mittelland
District de Porrentruy

Boncourt

Top 7 Natural Monuments around Boncourt

Natural monuments around Boncourt are situated in the Swiss Jura, a region characterized by its rolling hills, forests, and unique geological features. The area offers a diverse natural landscape shaped by ancient geological processes and rich biodiversity. This municipality provides access to various natural attractions, including significant karst formations and historical paleontological sites. The region's natural environment supports a range of outdoor activities focused on discovery and appreciation of its distinct natural heritage.

Best natural monuments around Boncourt

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Last updated: June 26, 2026

Porrentruy Botanical Garden

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The botanical garden in Porrentruy is one of the oldest of its kind in Switzerland. It was created in 1798 by order of Paris after the city was annexed by …

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Dinosaur Tracks of Pommerat

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It goes via a muddy trail to the well-preserved dinosaur tracks that are 150 million years old

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Milandre Caves

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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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Doue Spring

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The source of the Doue is located behind an old mill which once used dynamite from the water to grind the cereals of the region. During the hot summers, the place turns into a haven of freshness.

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Pont Sarrazin Natural Arch

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Natural arch at the end of a Jura valley. The Sarrazin Bridge takes its name from the legend of Allima, well known in the country.

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Puffin
March 18, 2026, Grottes de Milandre

Depending on the water level, the lower entrance of the cave can be explored more or less dry.

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August 14, 2024, Grottes de Milandre

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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A place where tranquility reigns supreme.

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The source of the Doue is located behind an old mill which once used dynamite from the water to grind the cereals of the region. During the hot summers, the place turns into a haven of freshness.

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If you stop in Porrentruy, if you are a herb, plant and flower enthusiast, you should definitely pay a visit to the Parc du Jardin Botanique. After the botanical garden in Basel, it is the second oldest in Switzerland. It is striking that in addition to the almost inexhaustible variety of plants, one or the other sundial on several house fronts shows the time in a shadowy way. A particularly idiosyncratic and modern example can be seen at the end of the park when you enter the area through the main portal. Right next to the botanical garden, there is a public car park that is subject to a fee. From the botanical garden, you can continue your journey of discovery in the direction of the old town, or pay your respects to the castle above the city.

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Natural arch at the end of a Jura valley. The Sarrazin Bridge takes its name from the legend of Allima, well known in the country.

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Over 600 local plant species from the Jura chain from Lake Biel to the Chasseral are on display. One focal point is the more than 70 varieties of roses and 180 varieties of irises, which enchant the garden in a huge sea of color when the flowers are in bloom.

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Frequently Asked Questions

What unique natural features can I explore around Boncourt?

The region around Boncourt offers a variety of natural features. You can discover the refreshing Doue Spring, a waterfall located behind an old mill. Another highlight is the Pont Sarrazin Natural Arch, an impressive geological formation with local folklore. For plant enthusiasts, the Porrentruy Botanical Garden showcases diverse species and is one of Switzerland's oldest botanical gardens.

Are there any impressive geological formations to see near Boncourt?

Yes, the area boasts significant geological formations. The Pont Sarrazin Natural Arch is a notable example, formed at the end of a Jura valley. Additionally, the Milandre Caves represent one of Switzerland's longest karst cave systems, though access is primarily restricted to speleologists. You can also visit the Dinosaur Tracks of Pommerat, where 150-million-year-old fossilized footprints are preserved.

Which natural monuments are suitable for families with children?

Several natural monuments are family-friendly. The Dinosaur Tracks of Pommerat are a great option, featuring well-preserved footprints and even a dinosaur replica for children to ride. The Porrentruy Botanical Garden offers a beautiful and educational experience with its diverse plant collections. The Sentier des Faînes (Beechnut Trail) near Boncourt is also ideal for families, with chainsaw sculptures, picnic areas, and an 'Enchanted Forest' section.

What kind of hiking opportunities are available near Boncourt's natural monuments?

The region offers various hiking opportunities. The Sentier des Faînes (Beechnut Trail) near Boncourt provides peaceful, well-maintained loops of around 2.6 km and 4.6 km, suitable for all ages. For more extensive adventures, you can explore the many routes available for cycling and mountain biking. For instance, there are numerous MTB trails around Boncourt, including routes that pass by the Old mill on the Allaine river or the Mont Renaud Observation Tower.

Are there easy trails suitable for all fitness levels?

Yes, the Sentier des Faînes (Beechnut Trail) near Boncourt is particularly well-suited for all fitness levels. It features gentle gradients and two accessible loops (approximately 2.6 km and 4.6 km), making it perfect for a leisurely walk or a family outing. The trail is mostly shaded, providing a pleasant experience even during warmer months.

What outdoor activities can I do near these natural monuments?

Beyond exploring the natural monuments themselves, the area around Boncourt is excellent for outdoor activities. You can find numerous routes for cycling, including circuits that pass through Switzerland, or enjoy gravel biking with routes like the Porrentruy Castle loop. Mountain biking is also popular, with MTB trails ranging from moderate to difficult, offering diverse terrain.

What historical or paleontological sites can be found in the area?

The region has significant historical and paleontological sites. The Dinosaur Tracks of Pommerat are a prime example, showcasing 150-million-year-old fossilized dinosaur footprints. The Porrentruy Botanical Garden, established in 1798, also holds historical significance as one of Switzerland's oldest botanical gardens.

What is the best time to visit the natural monuments around Boncourt?

The natural monuments around Boncourt can be enjoyed throughout the year, but the warmer months are particularly pleasant for outdoor activities. The Sentier des Faînes, for example, is mostly shaded, making it comfortable even in summer. The Dinosaur Tracks of Pommerat are freely accessible from April to October. During spring and summer, the Porrentruy Botanical Garden is especially vibrant with its blooming roses and irises.

Are there any natural monuments with water features?

Yes, the Doue Spring is a beautiful waterfall that provides a refreshing environment, especially during warmer months. It is situated behind an old mill, adding a touch of historical charm to the natural setting. The Milandre Caves also feature an underground river, the Milandrine, which has carved out its extensive system.

What do visitors enjoy most about the natural monuments near Boncourt?

Visitors appreciate the diverse natural beauty and the tranquility of the region. Highlights like the Doue Spring are praised for their refreshing atmosphere and peacefulness. The Porrentruy Botanical Garden is loved for its extensive plant varieties and historical significance. The blend of natural wonders with artistic and educational elements, such as those found on the Sentier des Faînes, also provides a unique and enjoyable experience.

Can I find amenities like picnic areas or observation points at these natural sites?

Yes, the Sentier des Faînes (Beechnut Trail) near Boncourt is well-equipped with amenities for visitors. It features dedicated picnic areas, a forest hut, and observation points, including a panoramic tower that offers splendid views of the surrounding landscape. These additions enhance the visitor experience, making it comfortable and engaging.

Are there any natural monuments that are less known but worth discovering?

While some sites are well-known, the region holds hidden gems. The Milandre Caves, though not publicly accessible for casual visits, are a natural monument of immense scientific interest and geological significance, steeped in local folklore. The Sentier des Faînes, with its unique 'agrisculptures' and insect hotels, offers a charming and less conventional nature experience.

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

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