Best natural monuments around Butry-Sur-Oise are found within the Parc Naturel Régional du Vexin Français, a region characterized by diverse natural landscapes. Situated along the Oise River, Butry-Sur-Oise offers access to extensive forests, wetlands, and valleys. The area features varied ecosystems, including large trees like oaks and beeches, calcareous grasslands, and moors. These environments provide habitats for local wildlife and offer opportunities for outdoor activities.
Last updated: June 20, 2026
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Very nice trail running outing in the forest 🌳
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The fountain is on a small bend, be careful because it is quickly invaded by plants
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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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High place of pilgrimage (in the region anyway) between the 15th and 18th centuries. The water from this fountain was said to have the power to cure various skin diseases (scabies for example). This pilgrimage ceased shortly before the French Revolution.
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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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Butry-Sur-Oise is situated within the Parc Naturel Régional du Vexin Français, offering a diverse range of natural landscapes. You'll find extensive forests with large trees like oaks, beeches, and hornbeams, alongside wetlands, calcareous grasslands, moors, and picturesque river valleys, particularly along the Oise River.
Yes, the Singletrack along the Marais de Stors is a significant wetland nature reserve. It's a classified site known for its sensitive environments and rich flora and fauna. While the path can get muddy after rain, the setting along the rock faces is beautiful.
You can visit The Blue Lake of Carnelle, located within the Carnelle forest. This lake, formed from old quarries, is known for its deep blue color, influenced by gypsum and marl in its rock bed. It's surrounded by oaks, beeches, and chestnut trees, offering a beautiful sight.
Absolutely. The Pierre de Lait Polishing Stone is an ancient sandstone block that served as a polisher in the Neolithic period, showing traces of human activity from thousands of years ago. Another significant historical site is the Covered alley, a funerary megalith dating back to the beginning of the Neolithic period, considered the largest and most famous of its kind in the Paris region.
The region around Butry-Sur-Oise is excellent for various outdoor activities. You can find numerous running trails, road cycling routes, and general cycling paths. For running, explore routes like 'Banks of the Oise – Banks of the Oise River loop from Valmondois'. Cyclists can enjoy routes such as 'View of the Vexin – Church of Grisy-les-Plâtres loop from Auvers-sur-Oise'. You can find more details on these activities and routes in our guides for Running Trails, Road Cycling Routes, and Cycling around Butry-Sur-Oise.
Yes, several natural monuments are suitable for families. The Blue Lake of Carnelle is categorized as family-friendly, offering a pleasant environment for all ages. The Covered alley is also listed as family-friendly, providing an interesting historical natural site for children to explore.
The Vexin Français Regional Natural Park, which encompasses Butry-Sur-Oise, is beautiful throughout the year. Spring and autumn are particularly pleasant for hiking and cycling, with milder temperatures and vibrant foliage. Autumn offers a 'feast for the eyes' around places like The Blue Lake of Carnelle with its oaks, beeches, and chestnut trees.
Visitors appreciate the diverse natural beauty, from the peaceful wetlands of the Marais de Stors to the unique geological features of The Blue Lake of Carnelle. The historical significance of sites like the Pierre de Lait Polishing Stone and the Covered alley also leaves a lasting impression, offering a blend of nature and ancient history. The komoot community has shared over 20 photos and given more than 100 upvotes to these natural sites.
Yes, the Saint Radegonde Fountain in the Montmorency forest holds significant historical and spiritual value. It was a high place of pilgrimage between the 15th and 18th centuries, with its water believed to heal the sick. It's a pretty fountain that adds a unique historical touch to any itinerary.
The diverse ecosystems of the Vexin Français Regional Natural Park provide habitats for a wide range of wildlife. You might encounter roebuck, does, foxes, badgers, owls, and various bat species. The wetlands, like the Marais de Stors, are particularly rich in flora and fauna.
When visiting the Singletrack along the Marais de Stors, be aware that the ground can quickly become muddy in bad weather or after rain. While it's generally an easy singletrack, watch out for roots, especially on descents. Despite this, the setting along the rock faces is described as beautiful and worth the visit.
The unique deep blue color of The Blue Lake of Carnelle is due to the geological composition of its rock bed. It's a mixture of gypsum and marl, which influences the water's hue. The lake itself was formed from old quarries, adding to its distinct character.


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