Top 8 Natural Monuments in Plaines De L'Escaut Natural Park
Best natural monuments in Plaines De L'Escaut Natural Park are found within a verdant expanse of forests and wetlands, situated near the Franco-Belgian border. This region, part of the larger Hainaut Cross-Border Natural Park, offers diverse ecosystems from peat moors to extensive woodlands. The park's varied natural landscape supports a wide array of plant and animal life, including rare species. Unique geological and historical contexts, such as wetlands formed by mining subsidence, add to the area's distinct character.
Best natural monuments in Plaines De L'Escaut Natural Park
- The most popular natural monuments is Marais d'Harchies-Hensies-Pommerœul Nature Reserve, a natural monument known for its wetlands. This site is a significant ornithological location in Wallonia, featuring observation points for bird watching.
- Another must-see spot is Mer de Sable State Reserve, an other natural area with peat moors and young birch forests. This 22-hectare protected area is home to exceptional flora, including heather and carnivorous plants, and offers marked trails for exploration.
- Visitors also love The bubbling spring of Stambruges and its mysteries., a natural monument located in the forest. This spring is characterized by its constantly agitated surface with fine bubbles, caused by air crossing a sandy layer.
- Plaines De L'Escaut Natural Park is known for its diverse natural monuments, including peat moors, extensive forests, and unique wetlands. Visitors can explore a variety of natural settings, from sandy areas with rare plants to significant ornithological sites.
- The natural monuments in Plaines De L'Escaut Natural Park are appreciated by the komoot community, with more than 160 upvotes and 50 photos shared.
Last updated: July 11, 2026
Mer de Sable State Reserve
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Marais d'Harchies-Hensies-Pommerœul Nature Reserve
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Source: visitwapi.be/nl/moeras-van-harchies
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The bubbling spring of Stambruges and its mysteries.
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The legend of the sunken coach
the boiling fountain of Stambruges hides the legend of the sunken coach. This unusual phenomenon has fueled a tragic legend linked to the place. In fact, it is said that in the past, one of the princes of the house of Ligne, to which Beloeil castle belongs, not far from here, was nicknamed the great devil. A nickname due to his reputation as an unrepentant gallant. He invited a young lady to spend a romantic evening on Good Friday. The unfortunate woman never returned to her home ... Coach, horses, coachman and young girl disappeared body and well in the waters of the spring. Nobody knew that she was the cause of the accident… divine punishment or jealousy… Some murmured that the mad coachman in love with his mistress could not bear that she gave herself thus to this prince so depraved… He then rushed all his crew in the dark waters, reputed to engulf forever objects and living beings trapped in the sands that sleep at the bottom ... This is how since midnight, every Good Friday, it is said that the coach reappears for a short time. We then hear the driver cracking his whip ... Before he dives again until the following year ...
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The Nail Tree of Stambruges
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There are now two of them carrying the wishes and hopes of recovery. The oldest, a black locust tree, fell to the ground in 2009. However, we continue to drive nails into it and leave personal objects, toys, clothes, shoes, bandages... These are the famous "rags" that we also find hanging to chapels, calvaries, springs in the region… The second, a younger oak, its “replacement” is right next door. Some “rags” also hang from the trunk to end up on the ground, a sign of healing according to tradition. But obviously, the old locust tree, even dead, still largely retains the votes of pilgrims.
You will notice the nails embedded in the bark. The rag trees of Stambruges would in fact be related to the tradition of nail trees, a tradition formerly common in northern France and Belgium. Originally, we just drove a nail into the tree, the menhir or the statue... By reciting a prayer or making a wish. Easier to deposit, more personal, rags have gradually taken over.
The rag trees of Stambruges are both invoked for the healing of skin diseases, rheumatism, childhood illnesses, to make it easier for babies to walk or the healing of wounds... We do not know when this belief dates back. On the other hand, when we look at the photos taken at the beginning of the 20th century, the locust tree, to the right of the chapel, does not yet seem to be covered in rags.
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Birdwatching hide at the Marais d'Harchies-Hensies-Pommerœul
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Attention change of regulation, a part of the reserve is forbidden to bicycles. I saw it this morning.
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Michel Raulier: The Nail Tree of Stambruges Tree worship in our region is very ancient. Proof of this is the discovery in Blicquy, in the place called "Ville d'Anderlecht," of a set of 120 posts up to 90 cm in diameter. These may have served as supports for offerings, as evidenced by the numerous iron pins found in the filling holes. This could correspond to an artificial sacred grove housing deities, similar to Lucan's description of petrified forests in Pharsalia. In the past, trees, with their longevity and majestic shape, aroused a sense of sacredness in the minds of our ancestors. They were also believed to be capable of helping people solve their problems, particularly health problems. Many customs exist: walking around the tree, driving nails to fix the ailment, and tying cloths or fabrics to bind it. These trees were often Christianized by the installation of religious images or a chapel nearby. One example among others is that of Notre Dame de Foy. In Foy, near Dinant, a woodcutter discovered a 15th-century statuette in the heart of a very ancient oak tree in 1609. Long forgotten, the figurine bearing the image of the Virgin had been placed in a niche carved into the trunk. Over time, the wood completely covered it and erased its memory. In Stambruges, there is one of these remarkable trees, and beside it is a chapel, called "the chapel of Erconpuch" or, by another name, "the chapel of Arc-au-Puche," dedicated to the Virgin Our Lady of Arc-au-Puits, formerly called the Virgin of the Woods.
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The Mer de Sable nature reserve is a 22-hectare protected area, renowned for its peat moors and young birch forests. Formerly a pond that dried up in the 19th century, the site is home to exceptional flora, including heather and carnivorous plants such as the sundew. The reserve, classified as a major heritage site in Wallonia, offers marked trails for hiking and observing local biodiversity.
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Ornithological nature reserve, with magnificent species. Several observation points set up for bird watching. accessible to PMR.
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Special, that sandy area and a nice place to eat (there is also a restaurant)
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There are two viewing huts on the route. But especially many ornithologists. This must clearly be a special place!
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Rarely seen so many ornithologists together. Each with their big, long cameras!
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In the forest of Stambruges is 'la Fontaine bouillante', the bubbling spring where, according to legend, a mistress of the Prince De Ligne drowned with her coach and the crew of the coach tries to surface. In reality, it is spring water bubbling up through a crack in the earth. https://nl.wikipedia.org/wiki/Bos_van_Stambruges
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Frequently Asked Questions
What are the most popular natural monuments in Plaines De L'Escaut Natural Park?
Among the most appreciated natural monuments are the Marais d'Harchies-Hensies-Pommerœul Nature Reserve, known for its significant ornithological value and wetlands, and the Mer de Sable State Reserve, which features unique peat moors and rare carnivorous plants. Visitors also find the mysterious bubbling spring of Stambruges particularly intriguing.
What unique natural features can I expect to see in Plaines De L'Escaut Natural Park?
The park offers a diverse range of natural features. You can explore unique peat moors and sandy areas with rare flora like heather and carnivorous plants at the Mer de Sable State Reserve. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve showcases extensive wetlands, which are vital for numerous bird species. Additionally, the park is home to vast deciduous forests, including the Bon Secours forest, and features unique phenomena like the bubbling spring of Stambruges.
Are there family-friendly natural monuments in Plaines De L'Escaut Natural Park?
Yes, several natural monuments are suitable for families. The Mer de Sable State Reserve offers marked trails that are easy to explore. The Nail Tree of Stambruges is a fascinating cultural and natural site that can spark children's curiosity. The 'Escale forestière' in Bon-Secours also provides an elevated walkway, the 'Promenoir des Cimes,' which is a fun and educational experience for all ages.
What is the best time to visit the natural monuments in Plaines De L'Escaut Natural Park?
The park's natural monuments offer beauty throughout the year. Spring and summer are ideal for observing the diverse flora, including heather and carnivorous plants, and for birdwatching at sites like the Marais d'Harchies. Autumn provides stunning foliage in the extensive forests. Even winter can be rewarding for quiet walks and spotting wildlife, though some facilities might have reduced hours.
Are there any historical or cultural sites associated with the natural monuments?
Yes, the natural monuments often have interesting historical contexts. The Marais d'Harchies, for example, were formed in depressions caused by mining subsidence in the 1920s. The Nail Tree of Stambruges is a unique cultural site linked to ancient traditions of healing and wishes. The bubbling spring of Stambruges also carries a local legend of a sunken coach.
What outdoor activities can I do near the natural monuments in Plaines De L'Escaut Natural Park?
The park is excellent for various outdoor activities. You can find numerous hiking trails, including easy options like the 'Grand Large Loop' or the 'Circuit de l'Arbre à clous'. For cycling enthusiasts, there are routes like the 'RAVeL W4: Canals, Streams and Rivers Trail'. Mountain biking is also popular, with trails such as the 'Stambruges MTB Playground – Beloeil Castle loop'. You can explore more options on the hiking guide, cycling guide, and MTB guide for the region.
Are there hiking trails suitable for different difficulty levels near these natural monuments?
Yes, the Plaines De L'Escaut Natural Park offers hiking trails for various skill levels. You can find easy walks like the 'Grand Large Loop' (6.9 km) or the 'Circuit de l'Arbre à clous' (5.6 km). For those seeking a bit more challenge, there are moderate routes such as the 'Les Catillons – Hunting Avenue loop from Harchies' (12.7 km). Explore more options in the hiking guide for Plaines De L'Escaut Natural Park.
Can I go cycling or mountain biking near the natural monuments?
Absolutely. The park provides excellent opportunities for both cycling and mountain biking. Road cyclists can enjoy routes like the 'RAVeL W4: Canals, Streams and Rivers Trail' (57.7 km, moderate). Mountain bikers have options such as the 'Stambruges MTB Playground – Beloeil Castle loop' (50.7 km, moderate). For more detailed routes, refer to the cycling guide and MTB guide for the region.
Are the natural monuments in Plaines De L'Escaut Natural Park accessible for wheelchairs?
Some areas within the natural monuments are designed to be wheelchair accessible. For instance, the Marais d'Harchies-Hensies-Pommerœul Nature Reserve is noted for its accessibility, offering observation points that can be reached by wheelchair. It's always advisable to check specific site information for detailed accessibility features before your visit.
Where can I find information or visitor centers in the park?
For practical information, maps, and details about events, you can visit the 'Maison du Parc Naturel'. Additionally, 'L'Escale forestière' in Bon-Secours serves as a visitor center, providing insights into the forest's life and offering unique experiences like its elevated walkway.
What do visitors particularly enjoy about the natural monuments in Plaines De L'Escaut Natural Park?
Visitors frequently highlight the rich biodiversity, especially the exceptional flora at sites like the Mer de Sable State Reserve, which includes carnivorous plants. The Marais d'Harchies is highly praised by ornithologists for its birdwatching opportunities. The unique geological and historical context, such as wetlands formed by mining activities, also adds an interesting dimension to the natural beauty. The marked trails and observation points make exploration enjoyable for all.
What makes the Mer de Sable State Reserve unique?
The Mer de Sable State Reserve is a 22-hectare protected area distinguished by its peat moors and young birch forests. It's home to exceptional flora, including heather and rare carnivorous plants like the sundew. This site, once a pond that dried up, is classified as a major heritage site in Wallonia and offers marked trails to explore its rich biodiversity.
What is special about the Marais d'Harchies-Hensies-Pommerœul Nature Reserve?
The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is a significant ornithological site in Wallonia, often considered one of the best. These wetlands were formed in depressions caused by mining subsidence in the 1920s, which subsequently filled with water. The reserve is highly valued for its diverse flora and fauna, particularly its extensive reed beds, and features several observation points perfect for bird watching.
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