Best natural monuments around Beaumont-Sur-Oise include the Forêt de Carnelle and the Oise-Pays de France Regional Nature Park, offering diverse natural environments. The area is characterized by its expansive forests, river valleys, and unique geological features. The Oise River, which borders Beaumont-Sur-Oise, contributes to the scenic beauty and provides opportunities for exploration along its banks. These natural features collectively form a significant "green lung" north of Paris, supporting rich biodiversity.
Last updated: July 4, 2026
Highlight (Segment) • Trail
Translated by Google •
Tip by
Highlight • Forest
Translated by Google •
Tip by
Sign up now to discover places like this
Get recommendations on the best single tracks, peaks, & plenty of other exciting outdoor places.
Sign up for free
Highlight • Historical Site
Translated by Google •
Tip by
Highlight • Historical Site
Translated by Google •
Tip by
Highlight • Natural Monument
Translated by Google •
Tip by
Sign up for free to discover even more natural monuments around Beaumont-Sur-Oise.
Sign up for free
Already have an account?
Start today with a free account
Your next adventure awaits.
Login or Signup
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.
0
0
pretty lake hidden in the middle of the forest
0
0
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.
2
0
in a beautiful forest we arrive there with a magnificent sun which warms up a little
0
0
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.
0
0
Magnificent natural reserve that this marsh of Stors.
0
0
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!
1
0
The Blue Lake, like the small pond located a few dozen meters away, has been built in old marl quarries, which give the water a bluish color. For this reason, they reach a depth of 20 to 30 m and swimming is prohibited there for safety reasons. On the other hand, you can go fishing there. The ponds have replaced the quarries, and the presence of green marls, which color their bed, explains their astonishing variation in color. Going from turquoise blue to emerald green, depending on the depth, the time of day, the intensity of the light.
0
0
The region around Beaumont-Sur-Oise is rich in diverse natural landscapes. You'll find extensive woodlands like the Forêt de Carnelle, river valleys along the Oise River, and unique wetlands such as the Marais de Stors. The area is also part of the Oise-Pays de France Regional Natural Park, which features limestone environments and a variety of flora and fauna.
Yes, several natural sites are suitable for families. The Blue Lake of Carnelle is a popular spot within the Forêt de Carnelle, offering easy walks around its distinctive blue waters. The Covered alley, a Neolithic funerary megalith, and the Auversian Geological Site are also noted as family-friendly, providing both natural beauty and historical interest.
The region offers fascinating historical natural monuments. The Pierre de Lait Polishing Stone is a significant sandstone block used by Neolithic humans to sharpen tools. Additionally, the Covered alley is a large Neolithic funerary megalith, considered an archetype of ancient burials in the Paris region. The Auversian Geological Site also has historical significance due to its unique geological substrate.
The area is excellent for various outdoor activities. You can enjoy hiking through the Forêt de Carnelle, with easy loops around The Blue Lake of Carnelle or the Petit Étang de Carnelle. The Oise River banks also offer scenic walks and cycling opportunities. For more detailed routes, explore the hiking routes around Beaumont-Sur-Oise, gravel biking trails, or road cycling routes.
Yes, the region caters to various hiking abilities. For easy walks, consider the 5.3 km loop around Lac Bleu de Carnelle or the 5.2 km path around the Petit Étang de Carnelle. More moderate options include a 16.1 km loop through the Zone Naturelle de la Rosière and Port de l'Isle Adam. You can find more trails, including difficult ones, in the hiking guide for Beaumont-Sur-Oise.
The natural monuments are beautiful year-round, but spring and autumn offer particularly pleasant conditions for outdoor activities, with mild temperatures and vibrant foliage. Summer is also great for exploring, especially around the lakes and river, though it can be warmer. Some paths, like the Singletrack along the Marais de Stors, can become muddy after rain, so consider drier periods or appropriate footwear.
Absolutely. The Oise-Pays de France Regional Natural Park, which borders Beaumont-Sur-Oise, is known for its rich biodiversity. You might spot roe deer, foxes, badgers, bats, and various bird species, including owls. The diverse habitats, from woodlands to wetlands, support a wide range of flora and fauna, making it a great area for nature observation.
The Blue Lake of Carnelle gets its distinctive blue hue from its origins as an old marl quarry, where the bottom rock is a mixture of gypsum and marl. While algae can change its color, it's known for its deep blue. Surrounded by oaks, beeches, and chestnut trees, it offers a picturesque setting and is one of two bodies of water in the Forêt de Carnelle.
The Oise-Pays de France Regional Natural Park is a vast area covering 60,000 hectares with diverse landscapes. It's committed to protecting biodiversity and heritage, including four Natura 2000 classified sites. For more details on its features and exploration opportunities, you can visit the Grand Roissy Tourisme website.
Visitors frequently appreciate the tranquil escape and the chance to experience preserved biodiversity. The picturesque and varied landscapes, from the bucolic paths along the Marais de Stors to the serene Blue Lake of Carnelle, are highly valued. The historical sites like the Pierre de Lait Polishing Stone also offer a unique blend of nature and ancient human history, leaving a lasting impression.
Yes, the Forêt de Carnelle offers several scenic spots. The Blue Lake of Carnelle itself is considered a viewpoint, offering beautiful vistas of the lake surrounded by mature trees. The varied terrain of the forest provides numerous picturesque settings for enjoying the natural beauty.


Extend your search for the best caves by checking out these guides of the top ones around Beaumont-Sur-Oise: