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France
Ile-de-France
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Génicourt

Top 7 Natural Monuments around Génicourt

Best natural monuments around Génicourt are found within the French Vexin Regional Natural Park, located in the Val-d'Oise department of the Île-de-France region. This area provides access to several notable natural monuments, offering diverse features for nature enthusiasts. The landscape includes panoramic viewpoints, ancient flora, geological sites, and tranquil marshlands, contributing to the region's natural heritage.

Best natural monuments around Génicourt

  • The most popular natural monuments is Singletrack along the Marais de Stors, a trail that runs along the Stors marsh nature reserve. This bucolic path offers beautiful scenery along rock faces, though it can be muddy after rain.
  • Another must-see spot is Auversian Geological Site, a natural monument that is an old quarry. Its geological interest lies in the distinctive "sands of Auvers," serving educational and public awareness purposes.
  • Visitors also love Butte de Rosne, a summit and natural landmark. At 216 meters above sea level, it is the highest natural point in the Val-d'Oise, Oise, and Île-de-France regions, offering expansive views.
  • Génicourt is known for its summits, geological sites, and marshland trails. The area offers a variety of natural monuments to see and explore, from high points with views to ancient forests and unique geological formations.
  • The natural monuments around Génicourt are appreciated by the komoot community, with over 100 upvotes and 21 photos shared by visitors.

Last updated: May 7, 2026

Singletrack along the Marais de Stors

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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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Auversian Geological Site

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Old quarry being restored by the Departmental Council. Place mainly for educational purposes and public awareness
The interest of this quarry lies in the geological substrate, formed from the famous sands of Auvers.

valdoise.fr/888-site-geologique-de-l-auversien.htm

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Butte de Rosne

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The mounds of Rosne or mounds of Rône are located in the Vexin, on the border of the departments of Val-d'Oise and Oise. At 216 meters above sea level, they are the highest point in the departments of Val-d'Oise and Oise and the highest natural point in the Île-de-France region.

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There are huge sinkholes in this forest!!! Yes, these ponds are collapses filled with water!!

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Here are many chestnut trees dating back more than 300 years. It is seen in their size and in the width of the trunks. They are discovered through the shaded trails of the Butte de Marines. A nugget of the French Vexin!

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Tips from the Community

Suard
July 26, 2025, Butte de Rosne

picking is not allowed, area often humid,

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I looked for the old chestnut trees, but alas I saw nothing! Maybe I didn't take the right path. But on the side of the GR, a lot of barriers and signs “private property, no entry, traps, etc.,” made me not want to get off the trail!

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Access is easy and quiet!

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Yes there are plenty of collapse zones! These ponds are only collapses filled with water!

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There are huge sinkholes in this forest!!! Yes, these ponds are collapses filled with water!!

Translated by Google

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The mounds of Rosne or mounds of Rône are located in the Vexin, on the border of the departments of Val-d'Oise and Oise. At 216 meters above sea level, they are the highest point in the departments of Val-d'Oise and Oise and the highest natural point in the Île-de-France region.

Translated by Google

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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.

Translated by Google

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Magnificent natural reserve that this marsh of Stors.

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Frequently Asked Questions

What are the most popular natural monuments to visit around Génicourt?

Visitors frequently enjoy the Singletrack along the Marais de Stors for its beautiful marshland scenery and rock faces. The Butte de Rosne is also highly regarded as the highest natural point in the Île-de-France region, offering expansive views. The Auversian Geological Site provides a unique educational experience with its distinctive "sands of Auvers."

Are there family-friendly natural monuments in the Génicourt area?

Yes, several natural monuments are suitable for families. The Auversian Geological Site is mainly for educational purposes and public awareness, making it an interesting stop for all ages. The Butte de Rosne, with its easy access and panoramic views, is also considered family-friendly.

What kind of unique natural features can I expect to see in the Vexin Français Regional Natural Park near Génicourt?

The region boasts diverse natural features. You can explore the unique geological substrate of the Auversian Geological Site, formed from the famous "sands of Auvers." The Ancient Chestnut Trees of Butte de Marines are over 300 years old, showcasing remarkable size. Additionally, the area features intriguing Large Sinkholes in Parc Naturel Régional du Vexin Français, which are collapses filled with water.

What outdoor activities can I do near these natural monuments?

The Vexin Français Regional Natural Park offers a variety of outdoor activities. You can find numerous hiking trails, including routes like the 'Julius Caesar Road and Viosne Valley Trail.' For cyclists, there are options such as the 'Château de Théméricourt – Village d'Us loop.' Mountain biking enthusiasts can explore trails like the 'Banks of the Oise River – Oise Riverside Walk loop.' You can find more details on these activities in the dedicated guides for hiking, cycling, and MTB trails around Génicourt.

What is the highest point in the Génicourt area and what does it offer?

The highest natural point in the Génicourt area, and indeed in the Val-d'Oise, Oise, and Île-de-France regions, is the Butte de Rosne. Standing at 216 meters above sea level, it provides expansive panoramic views of the surrounding Vexin landscape, making it a rewarding destination for those seeking scenic vistas.

Are there any ancient or historical natural sites to visit?

Yes, the Ancient Chestnut Trees of Butte de Marines are a significant historical natural site, with many trees dating back over 300 years. Their remarkable size and wide trunks are a testament to their age. Additionally, the Auversian Geological Site, an old quarry, offers insights into the region's geological history.

What should I know about the Singletrack along the Marais de Stors?

The Singletrack along the Marais de Stors is a picturesque path running alongside the Stors marsh nature reserve. It offers beautiful scenery with rock faces lining the route. While it's generally considered an easy singletrack, be aware that the ground can become quite muddy after rain, so appropriate footwear is recommended.

When is the best time to visit the natural monuments around Génicourt?

The natural monuments around Génicourt, located within the Vexin Français Regional Natural Park, are generally enjoyable throughout the spring, summer, and autumn months. Spring brings blooming flora, summer offers warm weather for longer explorations, and autumn provides beautiful foliage. While accessible in winter, some trails, like the Singletrack along the Marais de Stors, can become very muddy after rain or snow.

Are there any geological points of interest in the area?

Absolutely. The Auversian Geological Site is an old quarry known for its distinctive "sands of Auvers," providing a fascinating look into the region's geological past. Additionally, the Large Sinkhole in Parc Naturel Régional du Vexin Français highlights unique geological formations, being collapses filled with water.

What do visitors say about the natural monuments in Génicourt?

Visitors appreciate the diverse natural beauty and tranquility. They often highlight the panoramic views from the Butte de Rosne and the unique experience of walking among the ancient trees at the Butte de Marines. The scenic setting along the rock faces of the Singletrack along the Marais de Stors is also frequently praised, despite potential muddy conditions.

Can I find trails suitable for beginners near Génicourt's natural monuments?

Yes, several trails cater to different skill levels. The Singletrack along the Marais de Stors is described as a fairly easy singletrack, suitable for those looking for a less strenuous experience. The access to the Butte de Rosne is also noted as easy and quiet, making it accessible for beginners to enjoy the views.

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