Best natural monuments around Onnaing showcase the region's diverse natural features. Onnaing, a commune in northern France, is home to significant green spaces, including its Leisure Park and Parcours Nature, which offer a blend of natural beauty and recreational amenities. The area is characterized by extensive green spaces, rich biodiversity, and various notable natural landmarks, providing opportunities for outdoor activities. These natural features Onnaing France contribute to a serene environment for relaxation and appreciation of local biodiversity.
Last updated: July 2, 2026
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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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Ornithological nature reserve, with magnificent species. Several observation points set up for bird watching. accessible to PMR.
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Very mobile with magnificent view of the gorial pond
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This rock formation is very special in the forest!
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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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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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Near Onnaing, you can explore several distinctive natural monuments. Highlights include Goriaux Pond, a national biological reserve formed by mining subsidence, and Le Caillou-qui-Bique, a remarkable 20 to 25-meter high rock formation with local legends. Another significant site is the Marais d'Harchies-Hensies-Pommerœul Nature Reserve, known for being Wallonia's largest reed-covered area and home to rare species.
The area around Onnaing offers a diverse range of natural features. You'll find extensive green spaces, including the local Leisure Park and its 'Parcours Nature' with rich biodiversity. Expect to see lakes like Goriaux Pond, unique rock formations such as Le Caillou-qui-Bique, and significant wetlands like the Marais d'Harchies-Hensies-Pommerœul Nature Reserve. Forests like Bois d'Angre also contribute to the region's natural beauty.
Yes, the region features important protected natural areas. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is a prime example, recognized for its extensive reed beds and diverse, rare animal species. Goriaux Pond is also designated as a national biological reserve since 1982, highlighting its ecological significance.
Near Onnaing's natural monuments, you can enjoy various outdoor activities. The region is excellent for hiking, with routes like the 'Château d'Eth – Small spring water point loop' or 'Bunker in Northern France loop'. Cycling is also popular, with options ranging from easy to moderate routes such as the 'Sebourg Waterfall – Maison rouge loop' from Onnaing. For more detailed route information, you can explore the Hiking around Onnaing or Cycling around Onnaing guides.
Yes, there are hiking trails catering to various skill levels near Onnaing's natural monuments. You can find moderate trails like the 'Château d'Eth – Small spring water point loop from Sebourg' (11.4 km) or the 'Bunker in Northern France loop from Saultain' (11.1 km). These trails allow you to explore the natural beauty of the area. For a comprehensive list of routes, refer to the Hiking around Onnaing guide.
Absolutely. The area around Onnaing offers several cycling opportunities. You can find easy to moderate routes, such as the 'Sebourg Waterfall – Maison rouge loop from Onnaing' (20.6 km) or the 'Chapelle de Quar – Town of Vicq loop from Onnaing' (16.7 km). For more options, including road cycling, check out the Cycling around Onnaing and Road Cycling Routes around Onnaing guides.
Many natural sites around Onnaing are suitable for families. The Leisure Park in Onnaing itself offers walking paths, picnic tables, and a play area for younger visitors, along with an educational 'Parcours Nature'. Specific natural monuments like Bois d'Angre and Goriaux Pond are also noted as family-friendly, providing accessible environments for exploration.
While specific rules can vary by site, many natural areas and trails in the region, such as the walking paths within Onnaing's Leisure Park and general forest areas like Bois d'Angre, are generally welcoming to dogs, often requiring them to be on a leash. It's always advisable to check local signage or specific reserve guidelines before visiting with your dog.
The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is noted as being wheelchair accessible, offering opportunities for visitors with mobility challenges to experience its natural beauty. The Leisure Park in Onnaing also features pleasant walking paths that are generally suitable for all visitors.
The natural monuments around Onnaing can be enjoyed throughout the year, with each season offering a different experience. Spring and autumn are particularly pleasant for walking and observing nature, with milder temperatures and vibrant flora or changing leaves. The Leisure Park's diverse array of trees makes it interesting for nature observation across all seasons. Summer is ideal for longer outdoor activities, while winter can offer a serene, quiet beauty, though some paths might be less accessible.
Access to natural monuments around Onnaing typically involves a combination of driving and walking. Many sites, especially larger parks and reserves, will have designated parking areas. For instance, the Leisure Park in Onnaing is easily accessible within the commune. While public transport options directly to every remote natural monument might be limited, local buses can connect you to towns near these sites, from where you can often walk or cycle. It's recommended to check specific access details for each monument you plan to visit.
The time needed to explore varies depending on the monument and your activity. For instance, a visit to Onnaing's Leisure Park and its 'Parcours Nature' could take anywhere from 1 to 3 hours for a leisurely walk and exploration. Larger reserves like the Marais d'Harchies-Hensies-Pommerœul Nature Reserve might warrant a half-day or full-day visit, especially if you plan to observe wildlife or hike extensively. Smaller sites like Le Caillou-qui-Bique can be part of a longer walk or a shorter stop.
The natural monuments around Onnaing are unique due to their blend of geological history, ecological significance, and local folklore. Sites like Goriaux Pond are a direct result of mining subsidence, creating unique wetland ecosystems. Le Caillou-qui-Bique stands out with its ancient rock formation and the captivating legend of the devil's stone. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is exceptional as Wallonia's largest reed-covered area, supporting rare and threatened species, making each monument a distinct experience.


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