Best natural monuments around Preux-Au-Sart offer diverse natural landscapes for exploration. The region features significant natural sites, including unique geological formations and expansive woodlands. These areas provide opportunities to experience the local environment and its distinct natural features. The natural monuments contribute to the area's appeal for outdoor activities.
Last updated: July 2, 2026
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Very nice little spot at the bend of a jogging
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The Bois d'Angre, located in Honnelles, is a forest renowned for the Caillou-qui-Bique, a 370 million year old pudding rock. This forest is home to rich biodiversity with oaks, ash trees and various rare species. A place of legends and hikes, the Angre woods is a precious natural site in Wallonia, managed by Natagora and other organizations to preserve its unique fauna and flora.
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This rock formation is very special in the forest!
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A legend has been perpetuated for generations on this 25 meter high stone planted on a ridge (in patois we say that it rocks). A little step back in time... Saint-Ghislain completes the construction of its abbey. The devil decides that he will take advantage of the inauguration day to destroy the abbey and its occupants, by throwing an enormous stone found in the Pyrenees at the community. An angel warns Saint-Ghislain of the imminent danger weighing on the abbey. He gathers as many pairs of worn shoes as possible, which he slips into a huge bag and takes to the road to meet the evil one. Coming across a poor fellow in rags with holes in his shoes at this place, the devil, quite exhausted by the heavy load, questions him: “Is the abbey of Saint-Ghislain still far away? ". - “I’m coming from there, if it’s far!” » replies the old man while emptying his bag, filled with threadbare shoes, in front of the devil. Discouraged and disappointed, Satan preferred to give up, dropping his heavy stone on the ground and walking away blaspheming, fooled by the subterfuge. An hour and a half. N.B.: some historians say that this is the legend of Saint Remacle, during the construction of Stavelot Abbey. You are therefore free to substitute Remacle for Saint-Ghislain since this substitution does not modify the spirit of the story. In both cases, the devil is defeated. Cfr de informatiesteen ter hoogte van Le Chalet de Garde.
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The Bois d'Angre or Bois du Caillou-qui-bique is a Belgian forest located in Angre in the commune of Honnelles in the Walloon region, on a private plot. It is particularly known for its "poudingue" (hard rock sediment), 370 million years old, 25 meters high, whose shape is reminiscent of a human face. He is also said to have inspired the poet Émile Verhaeren. https://fr.wikipedia.org/wiki/Bois_d%27Angre
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The region around Preux-Au-Sart offers a variety of natural features, including unique geological formations like Le Caillou-qui-Bique, expansive woodlands such as Bois d'Angre, and refreshing spots like the Quélipont Waterfall. Additionally, the nearby Mormal Forest is a significant natural attraction, known for its vast deciduous woodlands and diverse ecosystems.
Yes, several natural monuments are ideal for families. Bois d'Angre is renowned for its rich biodiversity and offers various walks suitable for all ages. The Quélipont Waterfall provides a refreshing and scenic spot for a family pause. You can also find interesting natural elements like Trees with mistletoe, which can spark curiosity.
The natural monuments around Preux-Au-Sart are excellent starting points for various outdoor activities. You can enjoy cycling, gravel biking, and mountain biking on trails that pass through or near these sites. For example, there are numerous routes for mountain biking in the MTB Trails around Preux-Au-Sart guide, and options for Gravel biking around Preux-Au-Sart. The Mormal Forest, in particular, offers hundreds of kilometers of tracks for walking, cycling, and horse-riding.
Le Caillou-qui-Bique is a remarkable geological formation, a 20 to 25-meter high rock composed of fragments of several natural elements. It's often referred to as a 'pudding rock' due to its unique composition, dating back 370 million years. Its striking appearance, seemingly balancing on a ridge, has also inspired local legends.
Yes, the area is well-suited for hiking. Bois d'Angre offers several walks to discover its natural riches. You can also find sections of established trails like the GR121C, which provides an easy-to-follow path through scenic areas. For more cycling options, check out the Cycling around Preux-Au-Sart guide.
The natural monuments, especially woodlands like Bois d'Angre and the Mormal Forest, are home to rich biodiversity. You can expect to see various deciduous trees such as oak, ash, hornbeam, and beech. While specific large wildlife sightings might be rare, the forests support a diverse range of smaller flora and fauna, making them excellent spots for nature observation.
While the natural monuments themselves are primarily geological or ecological, the broader region holds historical significance. The nearby Mormal Forest, for instance, played a notable role in the retreat from Mons during World War I. This integration into the Regional Natural Park of Avesnois also highlights ongoing efforts to preserve its natural beauty and ecological importance.
The natural monuments are enjoyable throughout the year, each season offering a different experience. Spring brings lush greenery and blooming flora, while autumn showcases vibrant fall colors in the woodlands. Summer is ideal for refreshing visits to spots like the Quélipont Waterfall, and winter offers a serene, quiet atmosphere for walks, especially in the forests.
Yes, several natural monuments offer scenic views. Le Caillou-qui-Bique itself is a striking sight, located on the edge of a path at the bottom of the Grande Honnelle valley. The Quélipont Waterfall is described as a pretty waterfall and an ideal place for a pause, offering a refreshing view within a forest setting.
Visitors frequently appreciate the diverse natural landscapes, from unique rock formations to extensive forests and scenic waterfalls. The opportunity for immersion in nature, the well-maintained paths for various outdoor activities, and the peaceful atmosphere are often highlighted. The community has shared over 70 photos and given more than 220 upvotes, indicating a strong appreciation for the region's natural beauty.
Mormal Forest is located approximately 9.3 kilometers from Preux-Au-Sart, making it easily accessible by car. While specific public transport routes directly from Preux-Au-Sart to all parts of the forest may vary, local bus services or a short drive would be the most common ways to reach its various entry points and trailheads.


Extend your search for the best caves by checking out these guides of the top ones around Preux-Au-Sart: