Best natural monuments around Hon-Hergies include serene rural landscapes and accessible natural features. The area is characterized by the scenic Hogneau valley, which offers gentle terrain for walking amidst agricultural lands and bocage. Hon-Hergies also serves as a starting point for hiking routes that showcase its natural and cultural heritage. These features provide opportunities for outdoor exploration in a tranquil setting.
Last updated: July 2, 2026
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like a little trip to the moon...
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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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This is a summit climb. Especially on the adventurous side. There are ropes there to hoist you up. The other side is a nice wide walking path. In my opinion, the most beautiful slag heap on the GR 412.
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The Crachet slag heap is a Site of Great Biological Interest (SGIB). It is also part of the Natura 2000 network to protect its exceptional fauna and flora. Located a stone's throw from the SPARKOH science museum! (former PASS), the slag heap is a fabulous educational tool which regularly welcomes school visits but also families looking for calm and nature. Thanks to its marked and well-equipped paths with stairs, small bridges, duckboards and ropes, its ascent is easy despite a difference in altitude of around 70 m. Relatively wooded, the Crachet sometimes gives way to magnificent grassy wastelands and a few ponds which encourage the development of great biodiversity. Its summit, located at an altitude of 140 m, offers a beautiful panoramic view of the Borinage slag heap range as well as the SPARKOH! site, built by the architect Jean Nouvel. In this place, the ground is adorned with red and black. Smoke can even be observed in certain places because the heap is still burning more than 60 years after the closure of the site. coal mining. https://www.destinationterrils.eu/nl/terril-du-crachet
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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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Bois d'Angre is one of the undivided forests of Hainaut managed jointly by the Province of Hainaut, the Walloon Region and the municipality of Honnelles. It offers several walks to discover its mineral, plant and animal riches. https://www.itinari.com/fr/location/bois-d-angre
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Hon-Hergies is characterized by the scenic Hogneau valley, which offers gentle terrain for walking amidst agricultural lands and bocage. You can also explore the Bois d'Angre, a forest known for its biodiversity, and the unique rock formation of Le Caillou-qui-Bique.
Yes, Hon-Hergies is a starting point for several hiking routes. The 'La Tournée des Chapelles' is a 12.99 km moderate route winding through the Hogneau valley, combining natural scenery with historical chapels. Another option is the 'Circuit des machines anciennes', which highlights the interaction between human activity and the natural environment, passing by the Hogneau river and historical sites like the 'trou Poupoule'.
Le Caillou-qui-Bique is a 20 to 25 meter high rock composed of fragments of several natural elements, known for its precarious balance. Local legends associate its origin with the devil dropping a stone. It's located at the bottom of the Grande Honnelle valley, within the Bois d'Angre.
Yes, the Bois d'Angre offers several walks suitable for families. Additionally, Le Jardin des Pêcheurs, situated by fishing ponds, provides a peaceful environment for leisurely strolls and relaxation, making it ideal for a family outing. The 'Trees with mistletoe' highlight is also noted as family-friendly.
The Hogneau valley, with its river system and bocage landscape, contributes to local biodiversity. The Bois d'Angre is particularly rich in biodiversity, featuring oaks, ash trees, and various rare species. The Crachet slag heap is also a Site of Great Biological Interest (SGIB) and part of the Natura 2000 network, protecting its exceptional fauna and flora.
Yes, the Crachet slag heap is a former industrial site transformed into a natural area, offering insights into the region's mining past. Similarly, the Terril Saint-Antoine is another slag heap with a history tied to coal mining. The 'Circuit des machines anciennes' hiking route also highlights the historical interaction between human activity and the natural environment, showcasing agricultural and industrial heritage.
You can enjoy various outdoor activities. For gravel biking, routes like 'Mur de Spienne – Hyon Waterfall and Ponds loop' are available. Running enthusiasts can find trails such as the 'Running loop from Hon-Hergies'. Cycling options include the 'Hon-Hergies – Bavay Village loop'. You can find more details on these activities in the Gravel biking around Hon-Hergies, Running Trails around Hon-Hergies, and Cycling around Hon-Hergies guides.
The Crachet slag heap is accessible with marked and well-equipped paths, including stairs, small bridges, duckboards, and ropes, making its ascent easy despite a 70m altitude difference. From its summit at 140m, you get a beautiful panoramic view of the Borinage slag heap range. The ground is adorned with red and black, and sometimes smoke can be observed from underground fires.
Yes, Hon-Hergies is located near the Avesnois Regional Natural Park, a protected area that offers extensive opportunities for experiencing the natural beauty of the wider region. Additionally, the Forest of Mormal, the largest forest in the region, is only about 15 km away, providing hundreds of kilometers of natural exploration.
Visitors appreciate the unique rock formations like Le Caillou-qui-Bique, the diverse forests such as Bois d'Angre, and former industrial sites like the Crachet slag heap that have been transformed into natural areas. The tranquility of the rural landscapes and the opportunities for combining gentle walks with cultural discovery are also highly valued.
Many natural areas and trails in the region, including those in the Bois d'Angre, are generally dog-friendly. However, it's always recommended to keep dogs on a leash and check specific regulations for protected areas like the Avesnois Regional Natural Park before your visit.
The region's natural beauty, characterized by rolling agricultural lands and bocage, can be enjoyed throughout the year. Spring and autumn offer pleasant temperatures for hiking and vibrant colors in the landscape. Summer is ideal for longer outdoor activities, while winter can provide a serene, quiet experience, especially in the forests.


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