Best caves around Nandrin are primarily found in the surrounding Ardennes region of Belgium, known for its extensive subterranean formations. While Nandrin itself has limited publicly accessible caves, the nearby Solières valley features the complex Trou Manto. The wider area offers diverse caving experiences, from challenging explorations to significant archaeological sites. This makes the region a notable destination for those interested in geological and historical underground features.
Last updated: June 20, 2026
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Beautiful rock formations at Les Awirs with caves and climbing rocks
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Located in the Solières valley near Huy, the Trou Manto cave is a limestone cave with a complex network of tunnels. Access is via a steep path supported by a rope. The cave has three levels with magnificent stalactites, a sloping floor with collapses, and twelve large columns supporting the vaults. The entire structure is an impressive karst phenomenon, approximately 600 meters long and 48 meters deep. The cave is protected and fenced off due to vandalism and to protect bats; visits are only possible with a guide or a caving association. The cave is known for its diverse hydrological phenomena and the legend of the Nutons, gnome-like helper beings from folklore. This combination of nature, history, and mythology makes Trou Manto a special place.
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A collection of four caves, two of which are closed off as bat roosts. A steep climb or descent over a rocky path is definitely worth it.
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The complex originally consisted of four caves, some of which have now disappeared due to natural collapse and the proximity of quarries. The caves have been protected as cultural heritage in Wallonia since 1978 and have an exceptional status due to their scientific value. Although the caves themselves are currently not open to the public, the site remains an important archaeological and natural history location that visualizes the evolution of humanity.
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A magnificent hiking trail, but not to be underestimated. Along the hillside, you'll walk through rock formations, some of which you'll have to crawl through, and past viewpoints overlooking the Ourthe Valley. Some caves are accessible, but only after a short, steep climb. Be careful.
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This is a cave I used to visit a long time ago. Before, you could start at the very bottom and work your way up to the top of the quarry. Now, I don't think that's possible anymore.
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Although the caves are no longer accessible, they are worth the detour for their unexpected beauty. The red earth blends perfectly with the gray of the rock walls and the green of its abundant ivy. There were originally four caves on this site. The first disappeared due to limestone mining between 1890 and 1900. Exploring the Cockerill quarry massif, Philippe-Charles Schmerling discovered four caves on the site called Trô Cwaheur (= cut, tear). In the second cave, he unearthed two human skulls in 1829, one said to be Cro-Magnon and the second a Neanderthal child. The bones were associated with extinct fauna and presented the same state of preservation. At a time when biblical theory still prevailed, he began to prove the appearance of humans on earth more than 4,000 years ago. But, misunderstood, it would be necessary to wait for the discoveries made in the Neander Valley, in Germany, to see his thesis confirmed. It was a close call for "Neanderthal man" to be called "Awirs man". The site belongs to the Société Carmeuse and has been classified since 1978. The ditch that can be seen on the site is due to a subsidence of the ground following the exploitation of alum. Alum was exploited in this place from 1580 until the middle of the 18th century (around 1740).
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Approach (Parking) 50.556177, 5.579821 This massif consists of various climbing routes with varying degrees of difficulty. 1) La Dalle → The Slab 2) Porche de la Grotte → Portal of the Grotto or Entrance to the Cave 3) Porche Triangulaire / The Anticlinal → Triangular Portal / The Anticlinal 4) Dalle Supérieure → Upper Slab 5) Les Bombés → The Overhangs
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The region around Nandrin offers diverse cave experiences. You can explore the complex network of tunnels at Trou Manto, visit the historical Schmerling Caves site known for prehistoric discoveries, or discover the natural beauty of Chawresse Trail where a stream disappears underground into cavities.
Yes, the Abîme Cave (also known as Comblain Cave) is recognized as a 3-star tourist attraction and is family-friendly. Further afield, the famous Grottes de Han are also a popular choice for families, offering a vintage streetcar ride and extensive tours.
Access to Trou Manto involves a steep climb or descent over rocky paths. The main cave is protected and fenced off, requiring a guide or caving association for visits, making it a more challenging experience suitable for adventurers.
The Schmerling Caves site is historically significant as the location where the Neanderthal man was discovered in 1829. Further away, the Grottes de Goyet are known for important archaeological findings, including prehistoric art, and Grotte Scladina is a major archaeological site with Neanderthal remains.
Yes, the region boasts several caves with unique natural features. The Grottes de Han feature the Lesse River flowing through them, and the Grottes de Remouchamps offer the longest underground boat trip in Belgium on the Rubicon River. Many caves, including Trou Manto and Grotte La Merveilleuse, are known for magnificent stalactites, stalagmites, and other impressive dripstone formations.
Near the caves around Nandrin, you can find various outdoor activities. For hiking, explore routes like the 'View of the Valley – Les Rochettes loop' or 'O Musin loop' which you can find in the Hiking around Nandrin guide. If you prefer cycling, there are gravel biking routes such as the 'View of Méry – Roche-aux-Faucons Loop' in the Gravel biking around Nandrin guide, and mountain biking trails like 'Downhill Forest Trail' in the MTB Trails around Nandrin guide.
Caves generally maintain a cool, constant temperature year-round, often around 10-12°C (50-54°F), and can be damp. It's advisable to wear layers of clothing, including a warm jacket or fleece, and sturdy, closed-toe shoes with good grip, as paths can be wet and slippery. For more adventurous caves like Trou Manto, appropriate caving gear might be required.
Yes, Trou Manto is described as a complex network of tunnels requiring a steep climb on rocky paths, and access is restricted, often requiring a guide or caving association. The Sainte-Anne Cave and Rocks also offer challenging sections, with cavers exploring beyond the initial accessible parts.
Visitors appreciate the natural beauty and adventurous spirit of the region's caves. They enjoy the challenging explorations, the impressive geological formations like stalactites, and the historical significance of sites where prehistoric remains were found. The unique experience of streams disappearing underground, as seen at Chawresse Trail, is also a highlight.
Many of the larger, commercially operated caves in Wallonia, such as Grottes de Han or Grottes de Remouchamps, are open year-round, though specific opening hours may vary seasonally. Caves like Trou Manto, which are important bat roosts, may have restricted access during winter months to protect hibernating bat populations.
The Trou Manto in the Solières valley offers a more natural and less developed experience, requiring guided access due to its complexity and protected status. The Grottes de Hotton are also known for preserving their natural state, with access intentionally limited.
For detailed information about the Grottes de Han, including opening hours, ticket prices, and tour options, you can visit the official tourism website for the region: visitardenne.com.
Yes, the Grotte La Merveilleuse (The Marvelous Cave) in Dinant lives up to its name with stunning natural decorations, including calcite waterfalls, stalactites, and stalagmites. It features notable formations like the 'Glaciers' and the 'Grande salle'.


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