Top 5 Natural Monuments around Le Plessis-Luzarches
Best natural monuments around Le Plessis-Luzarches are found within the Val-d'Oise department of France, an area recognized for its ecological and scenic value. The region is part of the Parc Naturel Régional de l'Oise-Pays de France, which emphasizes the preservation of its natural heritage. Visitors can explore diverse landscapes including marshlands, rivers, and ancient forests. These areas offer opportunities for nature observation and tranquil walks in a preserved environment.
Best natural monuments around Le Plessis-Luzarches
- The most popular natural monument…
Last updated: July 2, 2026
The Blue Lake of Carnelle
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Étangs de Commelles
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Covered alley
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La Pierre Longue Menhir
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Accessible by walking along the wood in the field, it is visible from the field or the woods.
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The place known as La Pierre Monconseil
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Tips from the Community
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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A 3-meter-high isolated menhir, made of sandstone, with a typical shark's fin shape, suggesting that a part has been broken. Accessible by walking along the wood in the field, it is visible from the field or the woods.
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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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Educational trail laid out by a private owner. From geology to the Château de Vallière, you will know everything about the Bois de Morière. 1.5 km circuit which is really worth it, it feels like being in the south of France! Really exotic atmosphere and splendid nature! On the mountain bike side, the path goes up and down with two or three technical passages.
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The ponds of Commelles are part of the beautiful forest of Chantilly and therefore of the Regional Natural Park Oise-Pays de France It is a protected site, rich in biodiversity, with thousands of frogs in March. In the 19th century, the ponds were frequented by romantic artists and authors such as Chateaubriand.
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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 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.
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Frequently Asked Questions
What kind of natural features can I expect to see around Le Plessis-Luzarches?
The area around Le Plessis-Luzarches, nestled within the Parc Naturel Régional de l'Oise-Pays de France, offers diverse natural features. You can explore marshlands like the Marais du Plessis-Luzarches, tranquil lakes such as Étangs de Commelles and The Blue Lake of Carnelle, and ancient forests. The Ysieux River also contributes to humid meadows and swamps, creating a rich tapestry of ecosystems.
Are there opportunities for wildlife observation in the natural monuments?
Yes, the region is rich in biodiversity. The Marais du Plessis-Luzarches is home to 45 bird species, including rare ones like the common buzzard, and three amphibian species. Along the Ysieux River, you might spot swans, deer, hares, ducks, squirrels, kingfishers, and green woodpeckers. Étangs de Commelles is particularly known for thousands of frogs in March.
What unique geological features can be found in the area?
One notable geological feature is The Blue Lake of Carnelle, which gets its distinctive color from a bottom rock composed of gypsum and marl, originating from ancient quarries. Additionally, the Covered alley, a Neolithic funerary megalith, is constructed entirely from Fontainebleau sandstone, with outcrops visible on the nearby hillside.
Are there historical or archaeological sites among the natural monuments?
Yes, the region blends natural beauty with historical significance. The Covered alley is a prominent example, being a funerary megalith dating back to the Neolithic period and the largest of its kind in the Paris region. Another historical monument is La Pierre Longue Menhir, a 3-meter-high sandstone monolith.
Are there family-friendly natural monuments around Le Plessis-Luzarches?
Many natural monuments in the area are suitable for families. Étangs de Commelles and The Blue Lake of Carnelle are both categorized as family-friendly, offering pleasant walks and nature observation. The Covered alley also welcomes families interested in history.
What outdoor activities can I do near these natural monuments?
The area offers a variety of outdoor activities. You can enjoy hiking on trails like the 'Plateau de Thimecourt Fosses loop from Le Plessis-Luzarches' or 'Hérivaux Abbey loop from Bellefontaine'. Cycling is also popular, with routes such as 'The Coye-la-Forêt washhouse – Étangs de Commelles loop from Luzarches'. For more options, explore the dedicated guides for Hiking around Le Plessis-Luzarches, Road Cycling Routes, and Cycling around Le Plessis-Luzarches.
What is the best time to visit the natural monuments in this region?
The best time to visit depends on your interests. For observing the thousands of frogs at Étangs de Commelles, March is ideal. Generally, spring and autumn offer pleasant temperatures for exploring the forests and marshlands. Summer is also suitable, especially for enjoying the lakes, though it can be busier.
Are there any educational trails or unique experiences available?
Yes, The place known as La Pierre Monconseil features an educational trail laid out by a private owner. This 1.5 km circuit provides insights into the geology and history of the Bois de Morière, offering an exotic atmosphere and splendid nature that feels reminiscent of southern France.
Can I access these natural monuments using public transport?
While specific public transport details for each monument are not provided, Le Plessis-Luzarches is a commune in the Val-d'Oise department. It's advisable to check local public transport options or consider driving to reach the more remote natural sites within the Parc Naturel Régional de l'Oise-Pays de France.
What is the Parc Naturel Régional de l'Oise-Pays de France?
The Parc Naturel Régional de l'Oise-Pays de France is a regional natural park that encompasses the area around Le Plessis-Luzarches. Its purpose is to preserve the natural heritage, biodiversity, and cultural landscapes of the region. Many of the natural monuments mentioned, including Étangs de Commelles, are located within this protected park.
Are there any hidden gems or lesser-known natural spots worth visiting?
Beyond the main highlights, the Marais du Plessis-Luzarches offers a peaceful experience with its wooden path and rich biodiversity, making it a great spot for quiet nature observation. The Ysieux River, flowing through the Domaine du Plessis park, also provides scenic walks and opportunities to spot local wildlife away from more frequented areas.
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