Natural monuments around Bernissart offer diverse natural landscapes and recreational opportunities. This Belgian municipality features extensive marshes, dense forests, and a network of scenic canals. The region is known for its significant natural areas, providing varied terrain and rich biodiversity for exploration. These sites offer opportunities for nature observation and active exploration.
Last updated: June 28, 2026
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like a little trip to the moon...
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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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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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Among the most popular natural monuments in Bernissart, visitors frequently explore the Marais d'Harchies-Hensies-Pommerœul Nature Reserve, known as the largest reed-covered area in Wallonia and a vital ecological site for birdwatching. Another favorite is the Mer de Sable State Reserve, a protected area with unique peat moors and rare carnivorous plants. The intriguing bubbling spring of Stambruges also draws attention with its natural phenomenon and local legends.
Yes, several natural monuments are suitable for families. The Mer de Sable State Reserve offers marked trails that are great for exploring its unique flora. Additionally, The Nail Tree of Stambruges is a distinctive cultural and natural site that can be an interesting stop for families, offering a glimpse into local traditions.
Bernissart is home to some distinctive geological features. The bubbling spring of Stambruges is a natural curiosity where air constantly agitates the water's surface. The Mer de Sable State Reserve, or 'Sea of Sand,' presents an unexpected sandy geological feature within the forest, a remnant of an old pond that dried up.
The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is a prime location for wildlife observation, especially birdwatching, as it's a crucial ecological site for diverse bird species. The Mer de Sable State Reserve is known for its exceptional flora, including heather and rare carnivorous plants like the sundew.
Yes, The Nail Tree of Stambruges is a natural monument with significant historical and cultural ties. It's a traditional rag tree where people drive nails and leave objects, linked to beliefs about healing and wishes. This site also has a small chapel nearby, reflecting a blend of pagan and religious traditions.
The region around Bernissart offers various outdoor activities. You can find numerous routes for gravel biking, road cycling, and general cycling. For example, there are gravel biking routes like the 'Étang Chabaud-Latour – Lake view loop from Thivencelle' and road cycling routes such as the 'Blaton Canal – Grand Large de Péronnes loop from Blaton'. You can explore more options on the Bernissart guide page for cycling and mountain biking.
Yes, the natural monuments are often integrated into local hiking routes. The bubbling spring of Stambruges is a notable landmark on many trails within the Stambruges Forest. The Mer de Sable State Reserve also features marked trails for exploring its unique environment. The Stambruges Forest itself provides a dense woodland experience ideal for hiking.
The Terril Saint-Antoine, a former coal mine slag heap, is recognized as a natural monument due to its unique landscape. It offers challenging terrain and serves as a popular spot for mountain biking, providing a distinctive 'moon-like' environment and panoramic viewpoints.
The natural monuments in Bernissart can be enjoyed throughout the year, but each season offers a different experience. Spring and autumn are ideal for hiking and birdwatching in areas like the Marais d'Harchies due to milder weather and active wildlife. Summer is pleasant for shaded walks in the Stambruges Forest, while winter can offer tranquil, crisp views, especially along the canals.
The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is noted as being wheelchair accessible, allowing visitors to enjoy its expansive wetlands and observe its diverse flora and fauna.
Bernissart is characterized by diverse natural landscapes. You'll find extensive marshes, such as the Marais d'Harchies, dense woodlands like the Stambruges Forest, and a network of scenic canals, including the Blaton-Ath and Nimy-Blaton-Péronnes canals. These offer varied environments for exploration and nature observation.
Visitors particularly appreciate the ecological significance of the Marais d'Harchies for its birdlife and tranquil atmosphere. The unique flora, including carnivorous plants, at the Mer de Sable State Reserve is also a highlight. Many enjoy the blend of natural beauty with local legends, such as those surrounding the bubbling spring of Stambruges.


Extend your search for the best caves by checking out these guides of the top ones around Bernissart: