Best natural monuments around Écaillon are found in the green Écaillon valley in northern France. This region offers a landscape with natural features and historical sites. Visitors can explore diverse natural monuments, including ponds, forest trails, and unique geological formations. The area provides opportunities for observing landscapes and engaging in outdoor activities.
Last updated: June 18, 2026
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beautiful mountain bike playground
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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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You can enjoy this site composed of several natural and artificial ponds. It is a rich natural environment with a birch forest. There are many rare plant species and the European nightjar frequents the site during the nesting period.
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You can enjoy this site composed of several natural and artificial ponds. It is a rich natural environment with a birch forest. There are many rare plant species and the European nightjar frequents the site during the nesting period.
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Mandatory and iconic stopover in the region
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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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The Écaillon region offers a diverse range of natural monuments. You can find unique geological formations like the classified menhir the stone that grows, as well as several slag heaps that have been reclaimed by nature, such as Terril des Argales and Terril de Roeulx. These sites often feature ponds, forest trails, and offer panoramic views.
Yes, the stone that grows is considered family-friendly. It's a magical place, a historical menhir nestled in a small clearing, accessed by a footbridge, making it an interesting and accessible spot for a family walk.
The natural monuments around Écaillon are excellent starting points for various outdoor activities. You can enjoy mountain biking on trails like those found at Roost-Warendin Slag Heap 138, or explore the schist tracks of Terril de Roeulx by mountain bike or gravel bike. The area also offers numerous hiking and road cycling opportunities. For more detailed routes, check out the guides for gravel biking, road cycling, and hiking around Écaillon.
Several natural monuments offer excellent viewpoints. Terril des Argales provides unobstructed views of the region from different promontories, especially around its ornithological reserve pond. Similarly, reaching the top of Terril de Roeulx offers a panoramic view of the surroundings.
Yes, the stone that grows is a significant historical and natural monument. It is a classified menhir, a block of Landenian sandstone, listed as a historical monument since 1979. It's a unique blend of natural geology and local history.
The slag heaps, such as Roost-Warendin Slag Heap 138 and Terril des Argales, are unique natural monuments formed from mining waste that have been reforested and integrated into the landscape. They offer distinct ecosystems, often with challenging trails for mountain biking, panoramic viewpoints, and even ornithological reserves, providing a blend of industrial heritage and natural beauty.
Yes, Terril des Argales is an excellent spot for birdwatching. The pond surrounding the slag heap is an ornithological reserve, making it a prime location to observe various bird species in their natural habitat.
Absolutely. Roost-Warendin Slag Heap 138 is known for its numerous singletracks forming a labyrinth among birch trees, offering a great mountain bike playground. Terril de Roeulx also features schist tracks accessible by mountain bike and gravel. For more routes, explore the gravel biking guide for Écaillon.
Terril 125 of Sainte-Marie is partially accessible by bicycle, though you might encounter some rocks that prevent motor vehicles. If approaching from the Bruille lez Marchiennes side, the entrance has been blocked for cars, so be prepared to navigate some rocks if you're on a bike or on foot.
Visitors appreciate the unique blend of natural beauty and industrial heritage. They enjoy the panoramic views from the slag heaps, the challenging yet rewarding mountain bike trails, and the tranquil atmosphere of sites like the ornithological reserve at Terril des Argales. The historical significance of places like the stone that grows also adds a special charm.
Yes, there are easy walking options. The layout around the pond at Terril des Argales offers pleasant walks. For dedicated hiking routes, you can find several easy trails, including the 'Terril des Argales Loop' and 'Viewpoint over the lake – Argales Pond loop from Rieulay', within the hiking guide for Écaillon.


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