Best natural monuments around Honnelles are found within the Hauts-Pays Natural Park in Wallonia, Belgium. This municipality is characterized by its geological formations, rich biodiversity, and scenic river valleys. The area offers a blend of natural sites, including ancient rock formations and protected woodlands. It provides opportunities for exploring diverse natural landscapes.
Last updated: June 1, 2026
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Popular around Honnelles
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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Ornithological nature reserve, with magnificent species. Several observation points set up for bird watching. accessible to PMR.
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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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There are two viewing huts on the route. But especially many ornithologists. This must clearly be a special place!
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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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Honnelles is home to several distinctive geological formations. The most iconic is Le Caillou-qui-Bique, a 25-meter-high puddingstone rock formation estimated to be 370 million years old. You can also visit the Crachet slag heap, a former mining site that has become a Site of Great Biological Interest, offering unique terrain and panoramic views.
For rich biodiversity, head to the Bois d'Angre, a forest renowned for its variety of tree species like oaks and ash, and home to several rare plant and animal species. Another excellent spot is the Marais d'Harchies-Hensies-Pommerœul Nature Reserve, which features extensive wetlands and is one of Wallonia's largest reed-covered areas, supporting diverse and often rare animal species.
Yes, the region offers numerous hiking opportunities. You can find trails integrated into the Bois d'Angre, including the Natura 2000 path that passes by Le Caillou-qui-Bique. For more options, explore the hiking routes around Honnelles, which include easy circuits like the 'Circuit du Caillou-qui-Bique' and moderate trails like 'Natura 2000 Honnelles Loop C'.
Beyond hiking, Honnelles offers diverse outdoor activities. Mountain biking enthusiasts can explore trails around the Terril Saint-Antoine, which is known as a mountain bike park. Road cycling is also popular, with routes like the 'Bicycle Sculpture in Angreau – Côte du Caillou qui Bique loop'. You can find detailed routes for road cycling and MTB trails in the area.
Absolutely. The Bois d'Angre is considered family-friendly, offering pleasant walks amidst nature. The Crachet slag heap, with its marked and well-equipped paths, is also suitable for families looking for a mix of calm and nature, and it regularly welcomes school visits.
The natural monuments in Honnelles are beautiful year-round. Spring brings lush greenery and blooming flora, while autumn offers vibrant colors in the forests like Bois d'Angre. Summer is ideal for longer hikes and enjoying the river valleys. Even in winter, the landscapes have a unique charm, though some paths might be more challenging.
Several natural monuments offer excellent viewpoints. The summit of the Crachet slag heap, at 140 meters altitude, provides a beautiful panoramic view of the Borinage slag heap range. The Terril Saint-Antoine also offers great views, and Le Caillou-qui-Bique itself is a prominent landmark within the scenic Grande Honnelle river valley.
The Grande Honnelle River is one of the two rivers that give the municipality its name. Its valley sculpts the landscape, creating a scenic area with lush, rolling landscapes and trails. It's also designated as a nature reserve, highlighting its ecological importance and offering opportunities for guided walks to appreciate the local environment.
Yes, some natural sites in Honnelles are steeped in local lore. Le Caillou-qui-Bique, for instance, has an intriguing legend involving the devil and Saint-Ghislain (or Saint Remaclus), adding a mythical dimension to its geological wonder. The slag heaps, like Crachet and Terril Saint-Antoine, are remnants of the region's coal mining history, offering a glimpse into its industrial past.
Visitors frequently appreciate the unique blend of geological wonders, rich biodiversity, and the peaceful atmosphere. The intriguing legend surrounding Le Caillou-qui-Bique often sparks curiosity, while the extensive wetlands of the Marais d'Harchies-Hensies-Pommerœul Nature Reserve are a favorite for ornithologists. The well-maintained trails and panoramic views from sites like the Crachet slag heap also receive high praise from outdoor enthusiasts.
Yes, there are easy walking trails available. For example, the 'Circuit du Caillou-qui-Bique' is an easy 3.1 km hike that allows you to experience the natural beauty around Le Caillou-qui-Bique. Many paths within the Bois d'Angre are also suitable for leisurely strolls. You can find more easy options among the hiking routes around Honnelles.
The duration of your visit depends on which natural monuments you wish to explore and your chosen activities. A quick stop at Le Caillou-qui-Bique might take an hour or two, especially if combined with a short walk in the Bois d'Angre. For a more comprehensive experience, including hiking or birdwatching at the Marais d'Harchies-Hensies-Pommerœul Nature Reserve or climbing the Crachet slag heap, you could easily spend a full day or even a weekend exploring the various sites.


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