Best natural monuments around Saint-Prix include a variety of natural features within the Val-d'Oise department. The area is characterized by its green spaces, including parts of the Montmorency Forest, which offers opportunities for walks and enjoying nature. Nearby Lac d'Enghien provides additional natural appeal with its landscaped surroundings. These locations offer diverse natural landmarks and popular walks for exploration.
Last updated: October 5, 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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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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The area around Saint-Prix offers a diverse range of natural monuments, including unique marshlands like the Singletrack along the Marais de Stors, serene forest lakes such as The Blue Lake of Carnelle, and historical natural sites like the Saint Radegonde Fountain. You can also find ancient megalithic structures like the Covered alley and geological sites such as the Auversian Geological Site.
Yes, several natural monuments are great for families. The Blue Lake of Carnelle is a wonderful spot within the Carnelle forest, offering beautiful scenery with oaks, beeches, and chestnut trees. The Covered alley, a funerary megalith, provides an interesting historical natural monument for families to explore. Additionally, the Auversian Geological Site is being restored for educational purposes and public awareness, making it an engaging visit for all ages.
The region boasts several natural monuments with rich historical significance. The Saint Radegonde Fountain in the Montmorency forest was historically a pilgrimage site, with its water believed to have healing properties. You can also visit the Covered alley, a funerary megalith dating back to the Neolithic period, which is the largest and most famous of its kind in the Paris region. The Auversian Geological Site, an old quarry, also holds historical interest due to its unique geological substrate formed from the famous sands of Auvers.
For stunning forest and lake views, head to The Blue Lake of Carnelle. This lake, nestled in the Carnelle forest, is known for its deep blue color, attributed to a mixture of gypsum and marl at its bottom. The surrounding oaks, beeches, and chestnut trees create a picturesque setting. Additionally, the Montmorency Forest itself offers extensive green spaces for leisurely walks and enjoying nature.
Absolutely. The Montmorency Forest, which hosts several natural monuments, is ideal for walks and hikes. For specific trails, you can explore the hiking routes around Saint-Prix. One notable path is the Singletrack along the Marais de Stors, a bucolic trail running along the Stors marsh nature reserve, featuring beautiful rock faces.
The Blue Lake of Carnelle stands out due to its distinctive deep blue color. This hue comes from the unique geological composition of its bottom, which is a mixture of gypsum and marl. Surrounded by a variety of trees like oaks, beeches, and chestnuts, it offers a visually striking natural experience within the Carnelle forest.
The Saint Radegonde Fountain in the Montmorency forest is a historically significant natural monument. It was a popular pilgrimage site between the 15th and 18th centuries, as its water was believed to possess healing properties, particularly for skin ailments. It's a charming and historically rich spot worth visiting.
Yes, the area around Saint-Prix is well-suited for various outdoor activities. You can find numerous gravel biking routes that take you through the scenic landscapes. For runners, there are also many running trails around Saint-Prix, including routes that pass through the Montmorency Forest and near Lac d'Enghien.
The Singletrack along the Marais de Stors offers a bucolic path running alongside the Stors marsh nature reserve. Visitors can enjoy beautiful rock faces and a rich diversity of flora and fauna. Be aware that the ground can become quite muddy after rain, so appropriate footwear is recommended. Despite this, it's generally considered a fairly easy singletrack.
The Covered alley is a funerary megalith that dates back to the beginning of the Neolithic period. It is renowned as the largest and most famous of all covered alleys in the Paris region, serving as an archetype for burials associated with the Seine-Oise-Marne culture. All its slabs are made of Fontainebleau sandstone, with several outcrops visible on the hillside.
The Auversian Geological Site is an old quarry that is currently being restored by the Departmental Council. Its primary interest lies in its unique geological substrate, which was formed from the famous sands of Auvers. It serves mainly for educational purposes and public awareness regarding the region's geological heritage.
The natural environment around Saint-Prix is characterized by its extensive green spaces, notably parts of the Montmorency Forest, which offers ample opportunities for walks and enjoying nature. Nearby, Lac d'Enghien provides additional natural appeal with its landscaped surroundings, offering a peaceful setting for relaxation and various water activities. The area features a mix of forests, lakes, marshlands, and historical natural sites.


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