Best natural monuments around Marcq-En-Ostrevent offer diverse natural features within the broader Scarpe-Escaut Regional Natural Park. This region is characterized by its alluvial valleys and varied habitats, supporting a rich biodiversity. Visitors can explore a blend of tranquil lakes, historic slag heaps, and riverside paths, providing opportunities for outdoor activities and appreciating the local natural heritage. The area provides accessible natural protected areas and geological features for exploration.
Last updated: July 15, 2026
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The menhir is located in the marsh of Aubigny-au-Bac, on a footpath leading to Brunémont. It is a block of Landenian sandstone 2.90 m high (including 1.48 m above ground) by 2.15 m wide and 0.70 m thick. It is said to have been sunk to about 2.40 m. Shaped like a horse's head, it is associated with a prehistoric megalith despite the absence of evidence.
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Menhir part of the local history to discover. Be careful, the place is very swampy and it is more easily accessible in dry weather 😉.
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Very beautiful monument of local history to discover during a walk in nature.
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It is a magical place, sheltered in a small clearing, which is accessed by a footbridge. Don't make (too much) noise ...
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fairly steep climb but not too high (40m D +)
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Heap and nice natural area with schist tracks. Accessible by mountain bike and gravel. Possibility of reaching the top, which is not very high, but which allows to have a panoramic view of the surroundings.
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Accessible by gravel if you follow the trail. Please note that the entrance on the Bruille lez Marchiennes side has been blocked off to prevent the passage of cars. it will be necessary to climb some rocks to pass.
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The menhir of Oisy-le-Verger is like a "big pebble", as it is called here, planted in the middle of the marshy terrain of the Sensée valley. This particular location, on the old bed of the Scheldt, makes it difficult to access, especially during periods of rain. But, even from afar, at the end of the alley surrounded by a reed bed, the magnificent menhir classified since 1981 as an historic monument, remains particularly impressive.The emerged part is nearly 3 meters high, over a meter high. wide, for an invisible part which, for some, could be more than 8 meters deep. Its origin dates back to the Neolithic period, between - 5000 and 2500 BC. The marshy character of the land is much later than the megalith itself, which explains its presence in such an unfavorable place. But the surrounding waters have greatly contributed to the mystery that surrounds it. The legend of a pact with the devil Like many of its ilk, the legendary origin of the Oisy-le-Verger menhir is intimately linked to the devil. A tireless builder, but poor calculator, who, once again, will be caught off guard by the too early crowing of a rooster. This time, he offered his services to nuns to build their convent overnight. As a reward, they owed him their souls if the latter had ended before dawn. Satan set to work, and carried huge stones to the building all night long. Alas, for him, before the fateful hour, the nuns woke up the rooster, which began to crow. Surprised, the devil let go of the huge stone he was still holding ... She came to hide where we see her today.
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The region around Marcq-En-Ostrevent, particularly within the Scarpe-Escaut Regional Natural Park, offers a diverse range of natural monuments. You can find historic slag heaps (terril) like Terril des Argales and Terril de Roeulx, which provide unique landscapes and viewpoints. There are also ancient menhirs, such as The Big Rock and the stone that grows, which are steeped in local history and legend. Additionally, the area features tranquil lakes, ornithological reserves, and wetland ecosystems like the Tourbière de Vred.
Yes, several natural monuments offer excellent panoramic views. Terril des Argales provides an unobstructed view of the region, especially around its pond, which is an ornithological reserve. Similarly, Terril de Roeulx allows visitors to reach its summit for a panoramic perspective of the surroundings.
The area is notable for its slag heaps (terril), which are remnants of past mining activities and have become unique geological features. Examples include Terril des Argales and Terril 125 of Sainte-Marie. You can also discover ancient menhirs, such as The Big Rock, which dates back to the Neolithic period, and the stone that grows, both listed as historical monuments.
The region, particularly within the Scarpe-Escaut Regional Natural Park, is known for its rich biodiversity. Étang des Argales is a significant ornithological reserve, making it an excellent spot for birdwatching. The park's diverse habitats, especially the alluvial valleys of the Scarpe and Escaut rivers, are vital for numerous emblematic species of fauna and flora.
The natural monuments around Marcq-En-Ostrevent are ideal for various outdoor activities. You can enjoy cycling, running, and mountain biking on trails that often incorporate these sites. For example, the slag heaps like Terril de Roeulx offer schist tracks suitable for mountain biking and gravel cycling. The Chemin de halage along the Scarpe river provides a secured trail for walking and cycling. You can find more routes in the Cycling around Marcq-En-Ostrevent, Running Trails around Marcq-En-Ostrevent, and MTB Trails around Marcq-En-Ostrevent guides.
Yes, there are several trails suitable for hiking and walking. The Chemin de halage along the Scarpe river offers a peaceful route for leisurely strolls or more active cycling. Terril 125 of Sainte-Marie is accessible by gravel if you follow its trail, providing a natural experience. The broader Scarpe-Escaut Regional Natural Park also features numerous paths for exploring its diverse environments.
Many natural monuments in the area can be enjoyed by families. Sites like the stone that grows are considered family-friendly and offer a blend of nature and local history. The tranquil settings of places like Étang des Argales are also suitable for family outings, with opportunities for birdwatching and gentle walks. Always check specific trail conditions for younger children.
Generally, natural areas and trails are welcoming to dogs, but it's always recommended to keep them on a leash, especially in protected areas or near wildlife, such as the ornithological reserve at Étang des Argales. Be sure to carry waste bags and clean up after your pet to help preserve the natural environment for everyone.
The natural monuments around Marcq-En-Ostrevent can be visited year-round, each season offering a different experience. Spring and autumn are particularly pleasant for hiking and cycling, with mild temperatures and beautiful foliage or blooming wildflowers. Summer is great for longer days and enjoying the lakes, while winter can offer a serene, quiet atmosphere, though some paths might be muddy or less accessible. For sites like The Big Rock, which can be very swampy, dry weather is recommended for easier access.
Access varies by site. For example, The Big Rock can be very swampy, making it more easily accessible in dry weather. For Terril 125 of Sainte-Marie, while accessible by gravel, the entrance on the Bruille lez Marchiennes side has rocks blocking motor vehicles, so you might need to navigate around them. Many trails, especially along the Scarpe, are secured and well-maintained for walking and cycling.
While specific parking details for each individual natural monument are not always available, many natural sites within the Scarpe-Escaut Regional Natural Park are generally accessible by car, often with designated parking areas near trailheads. For public transport, options may be limited to nearby towns, requiring a walk or cycle to reach the more remote natural monuments. It's advisable to check local transport schedules and parking availability for your specific destination before your visit.
Marcq-En-Ostrevent and the surrounding villages within the Scarpe-Escaut Regional Natural Park offer various local cafes, restaurants, and accommodation options, including guesthouses and rural hotels. While not directly adjacent to every natural monument, you'll find amenities within a reasonable driving or cycling distance, especially in larger towns like Saint-Amand-les-Eaux.


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