Best natural monuments around Olne highlight the region's ecological and scenic beauty. Located in the foothills of the Pays de Herve, Olne offers diverse landscapes including hedged farmland, valleys, and hills. These natural features contribute to its recognition as one of the "Plus Beaux Villages de Wallonie." The area provides a serene backdrop for outdoor activities, with numerous trails and routes available for exploration.
Last updated: May 17, 2026
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The Chawion pond is a site of biological interest, with numerous amphibians and insects in the surrounding wetland.
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Bridge connecting two wooded promontories between Ninane and Chaudfontaine.
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superb beautiful walk very easy!
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The Devil's Bridge is really beautiful, built from many stones that are neatly placed next to each other. It is located along the Chemin du Bois, which runs from Monté de Chaudfontaine to Ninane. There is also a bench where you can rest for a while.
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Chaudfontaine is known for its thermal baths at the Château des Thermes, a remarkable place where you can enjoy thermal water in an exceptional setting. It features an outdoor thermal bath at 32°C, a thermal pool, whirlpools, saunas, a hammam, relaxation rooms, infrared cabins, and more. A dream place to relax! Source: https://www.visitardenne.com/de/das-beste-der-ardennen/must-see-reiseziele/staedte-und-dorf/chaudfontaine
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Its calamine-rich formation dates back to the time when the steelworks in the valleys of the Vesdre and the Ourthe released heavy metal fumes (zinc and lead) into the atmosphere, which were carried by the prevailing winds to the surrounding hills. This pollution resulted in impressive landscapes and a unique biotope. The large grassy areas are interspersed with gnarled oaks and a few birches, giving them a particularly remarkable "savannah" appearance. Source: https://payschantoire.natagora.be/nos-reserves/bois-les-dames
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Located in the municipality of Chaudfontaine (Ninane), directly opposite the "La Rochette" nature reserve, this vast calamine-rich heathland offers an exceptional landscape. It is classified as a site of great biological interest (SGIB) and is part of the Natura 2000 network.
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Built of dry stone on the foundations of slate cliffs, it probably dates, according to tradition, to the construction of the railway in 1830 or during the development of the first hiking trails. The bridge is associated with a legend involving farmers from the hamlet of Ninane and the other surrounding hamlets who made a pact with the devil. Source: Signpost
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Olne is rich in diverse natural features. You can explore the unique Chawion Pond, a site of biological interest with wetlands, diverse flora, and a mix of siliceous and calcareous soils. Another fascinating spot is the Chantoire de la Falise, where a stream mysteriously disappears at the foot of a small cliff, creating a distinctive 'singing' sound. The region also boasts the picturesque Bocage of the Pays de Herve, characterized by hedgerows, meadows, and orchards, perfect for tranquil strolls.
Yes, the Devil's Bridge (Pont du Diable) is a notable natural monument with a rich history. Built of dry stone on slate cliffs, it's associated with local legends involving farmers and the devil, and its construction may date back to the railway era or early hiking trail development. Additionally, the Confluence of the Ourthe and the Meuse is not only a scenic spot but also a historical site where the Battle of Liège took place in 1914 during World War I.
The area around Olne is ideal for various outdoor activities. You can find numerous marked trails for hiking, running, and cycling. For example, there are several hiking routes that take you through the hedged farmlands of the Pays de Herve, and running trails offering views over the Vesdre Valley. Cyclists can also enjoy diverse cycling routes, including challenging climbs and scenic canal paths.
Absolutely! The Chawion Pond is a great family-friendly option, offering easy walks around its biologically rich wetlands. The Confluence of the Ourthe and the Meuse is another scenic and accessible spot for families. For a unique experience, the Chaudfontaine Thermal Springs offer a relaxing environment with natural hot springs, which can be a pleasant outing for all ages.
For expansive vistas, head to the Bois d'Olne ridge. This elevated position provides superb panoramic views of Olne village below and the broader Ardennes region, making it an excellent spot for photography and sightseeing. The Savanna at Bois-les-Dames also offers impressive landscapes and viewpoints over its unique calamine-rich heathland.
The natural monuments around Olne can be enjoyed throughout the year, each season offering a different charm. Spring brings vibrant flora to places like Chawion Pond and the Bocage of the Pays de Herve. Summer is ideal for longer hikes and outdoor activities. Autumn transforms the landscapes with beautiful fall colors, especially along the Bois d'Olne ridge. Even winter can be picturesque, though some trails might be more challenging.
Yes, the region offers interesting geological features. The Chantoire de la Falise is a remarkable natural curiosity where a stream disappears into the ground, showcasing unique hydrological geology. The Devil's Bridge (Pont du Diable) is built on slate cliffs, highlighting the local rock formations. The Savanna at Bois-les-Dames is also geologically unique, being a calamine-rich heathland formed by historical industrial pollution, creating a distinct biotope.
The Savanna at Bois-les-Dames is classified as a site of great biological interest and is part of the Natura 2000 network. Its unique 'savannah' appearance, with large grassy areas interspersed with gnarled oaks, is a result of its calamine-rich soil, which developed due to heavy metal fumes from past steelworks. This created a distinctive biotope and an exceptional landscape.
Yes, the Chaudfontaine Thermal Springs are located nearby. Chaudfontaine is known for its natural hot springs, which gush from the rocky subsoil at a temperature of 36.6°C. You can experience the benefits of this thermal water at the local spa, offering a unique opportunity for relaxation and well-being.
Visitors frequently appreciate the diverse landscapes, from tranquil ponds and unique wetlands to panoramic viewpoints and historical sites. The region's natural beauty, combined with its rich history and opportunities for outdoor activities, makes it a popular destination. The komoot community has shown significant appreciation, with over 490 upvotes and more than 130 photos shared, highlighting the appeal of these natural attractions.
Yes, many of the natural monuments and surrounding areas offer trails suitable for various fitness levels. While some routes can be moderate or difficult, you can find easier walks around sites like the Chawion Pond or through the gentle landscapes of the Bocage of the Pays de Herve. When planning your visit, look for routes categorized as 'easy' in the hiking guides for Olne.


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