Best natural monuments around Bernes-Sur-Oise encompass a variety of natural areas, including parts of the Oise-Pays de France Regional Natural Park and the banks of the Oise River. This region features extensive forests, wetlands, and riverine landscapes, providing diverse habitats. The natural surroundings offer opportunities for outdoor activities and observing local flora and fauna. The area is characterized by its bucolic rural scenery and protected natural sites.
Last updated: July 4, 2026
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What is to be remembered from this route is the passage through the Carnelle forest. However, there are too many roads on the Isle Adam and along the Oise. No particular difficulty.
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pretty lake hidden in the middle of the forest
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This funerary megalith dates back to the beginning of the Neolithic period! It is the largest and most famous of all the covered alleys in the Paris region, which has become the archetype of burials associated with the Seine-Oise-Marne culture. All the slabs are in Fontainebleau sandstone, several outcrops of which are visible on the hillside.
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in a beautiful forest we arrive there with a magnificent sun which warms up a little
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This bucolic path runs along the Stors marsh nature reserve. The ground quickly becomes muddy in bad weather and the days following the rain. That said, the setting is beautiful along the rock faces. For the rest, it's a fairly easy single.
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Magnificent natural reserve that this marsh of Stors.
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Here we have a beautiful view of the Marais de Stors nature reserve, a preserved site in the middle of the forest. We appreciate the density of the greenery. Over the year, you can admire the different colors, like an open-air fresco. It is the only swamp in the region, which makes it a unique place to discover during a running outing.
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Lac Bleu is one of the two bodies of water in the Carnelle forest. On sunny days, its name takes on its full meaning. But there is another reason for the name of this lake from ancient quarries. The rock at the bottom is a mixture of gypsum and marl. The color is changing due to algae, but originally it is deep blue. Around the lake, one can appreciate oaks, beeches and chestnuts. A feast for the eye!
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The region offers diverse natural features. The Marais de Stors is a unique wetland nature reserve with scenic rock faces. You can also visit The Blue Lake of Carnelle, known for its deep blue color and surrounding oak, beech, and chestnut trees within the Forêt de Carnelle. The Bernes-sur-Oise Marsh itself is a significant biodiversity hotspot, especially for birdwatching.
Yes, the area features fascinating historical natural monuments. The Pierre de Lait Polishing Stone is a sandstone block used as a polisher in the Neolithic period, offering a glimpse into ancient human activity within a forest setting. Additionally, you can find a Covered alley, a funerary megalith dating back to the Neolithic period, considered the largest and most famous of its kind in the Paris region.
The wetlands, particularly the Bernes-sur-Oise Marsh and the Marais de Stors, are biodiversity hotspots. In winter, the Bernes-sur-Oise Marsh is a resting area for migratory birds like ducks and geese. During spring and summer, you can observe various bird species, amphibians such as green frogs and common toads, and a vibrant array of insects including dragonflies, butterflies, and grasshoppers.
Absolutely! The Blue Lake of Carnelle is categorized as family-friendly, offering a pleasant forest environment. The Covered alley is also suitable for families, providing an interesting historical site within nature. The Bernes-sur-Oise Marsh has a path open to non-motorized traffic, making it accessible for nature walks with children.
The region is excellent for various outdoor activities. You can find numerous trails for hiking, running, and road cycling. For example, there are many hiking routes, including an easy loop around Lac Bleu – Carnelle's Blue Lake. If you enjoy running, explore the running trails, or for cyclists, there are road cycling routes that take you through scenic landscapes.
Spring and summer are ideal for experiencing the full vibrancy of the natural monuments. From spring onwards, the marshes come alive with blooming plants and active wildlife. Winter offers a different perspective, especially for birdwatching migratory species in the Bernes-sur-Oise Marsh. The forests, like Forêt de Carnelle, are beautiful year-round, with changing colors in autumn.
Yes, you can find a Breathtaking view of the Stors Marsh, which provides a beautiful perspective of the nature reserve. This spot allows you to appreciate the density of the greenery and the unique wetland landscape, which changes colors throughout the year.
When visiting natural reserves like the Bernes-sur-Oise Marsh, it's generally required to keep dogs on leashes to protect the delicate ecosystem and wildlife. For other trails and forest areas, such as those around Forêt de Carnelle, specific regulations may vary, but keeping dogs under control is always recommended.
The Bernes-sur-Oise Marsh features a path open to non-motorized traffic, which can offer some accessibility for those seeking easier walks. However, specific information regarding wheelchair accessibility for all natural monuments is limited. Trails like the Singletrack along the Marais de Stors can become muddy after rain, making them less accessible.
The Oise-Pays de France Regional Nature Park, which encompasses parts of the region, is an extensive protected green space largely forested. It's significant for its commitment to sustainable management and preservation of natural areas. The park offers over 1,000 km of hiking trails and contributes to the rich biodiversity and natural beauty found around Bernes-sur-Oise, including areas like the Forêt de Carnelle and the banks of the Oise River. You can learn more about the park at visitparisregion.com.
Yes, for an easier experience, consider the path within the Bernes-sur-Oise Marsh, which is open to non-motorized traffic and allows for gentle nature walks. Additionally, the hiking guide for the area includes an easy loop around Lac Bleu – Carnelle's Blue Lake, which is suitable for beginners.


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