Caves around Aywaille offer a unique subterranean experience in the Belgian Ardennes, a region known for its karstic landscape and natural monuments. The area features a blend of geological formations, including underground rivers and ancient cave systems. These natural wonders provide insights into geological processes and historical human presence. Aywaille is a destination for exploring diverse cave environments.
Last updated: May 28, 2026
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Popular around Aywaille
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Nice rocky path along the Ourthe
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Varied and surprising: forest, climbing, valleys, meadows, city!
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Entrance fees (including the underground boat tour) may vary depending on the season. Children aged 3–11 pay €14, teenagers €17, adults €20, and seniors aged 60 and over €16. Reduced rates are available for people with reduced mobility. The caves are open daily from 9:30 a.m. to 5:00 p.m. Payment can be made in cash or by credit card. Reservations can be made online or by phone. A special tour for people with reduced mobility is available—please contact us in advance if you require one.
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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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Coordinates: 235.87/139.12/85 The cave is located on the Esneux-Tilff road, on the right bank of the Ourthe River, 1 kilometer before entering Tilff. The large entrance is approximately 20 meters above the road, at the foot of a very steep limestone cliff. This cave has been known for a long time: it was discovered during quarrying in 1837. In the 1960s, the "Réseau Lemaire" was discovered; an upper level with beautiful calcite pools and a lake. Source: https://www.scavalon.be/avalonnl/fiches/fich23.htm
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One of the many caverns in these hills. In this cave a utensil was found in the shape of a beetle (coléoptère).
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The front part of the cave is an open grotto, at the back there is a barred gate that blocks access to the actual cave.
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Via a stone staircase you reach the rocks of Tilff, a fairly well-known massif where you sometimes see climbers in action, and the Sint-An cave just next to it, where cavers have been doing their thing for many years. You can only view the beginning if you are not a caver.
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The region offers diverse subterranean experiences. Highly regarded spots include the Natural Rock Tunnel near Bomal, known for its unique passage with stairs and bridges. The Coléoptère Cave is a historical site with archaeological significance. Additionally, the Chawresse Trail features interesting rocks and caves along a stream, requiring some fording.
Yes, the Coléoptère Cave is a notable historical site where archaeological discoveries, such as a cockchafer-shaped pendant, were made. The Grottes de Remouchamps, while not listed as a highlight in the guide, are also historically significant, having been inhabited by Paleolithic hunters around 8,000 years ago.
The caves in the Aywaille region are part of a karstic landscape. The Grottes de Remouchamps, for example, are famous for their underground river, the Rubicon, which visitors navigate by boat. This system also features impressive stalagmites, stalactites, and flowstones, highlighted by modern LED lighting. The Natural Rock Tunnel near Bomal offers a distinctive walk through a natural rock formation.
The Grottes de Remouchamps are considered family-friendly, offering a dual tour experience that combines walking through galleries with an underground boat ride. The Remouchamps Caves highlight also notes it as family-friendly. It's advisable to check specific age or height restrictions for boat tours if visiting with very young children.
The Grottes de Remouchamps offer a unique dual tour experience. It begins with a walk of over a kilometer through various galleries, showcasing geological formations and historical sites. This is followed by a boat ride on the underground Rubicon river, which is a defining feature of the visit. Guided tours are available in multiple languages.
Beyond cave exploration, the Aywaille region offers various outdoor activities. You can find numerous cycling routes, such as those detailed in the Cycling around Aywaille guide, or explore running trails like those in the Running Trails around Aywaille guide. For off-road adventures, consider the gravel biking options in the Gravel biking around Aywaille guide.
The temperature inside the Remouchamps Caves, for instance, remains constant between 8 and 10 degrees Celsius (46-50°F) all year round. It's recommended to bring a light jacket or sweater, even in summer, to stay comfortable during your visit.
Yes, the Sainte-Anne Cave and Rocks near Tilff offer a more challenging experience. This site features various climbing routes on its limestone cliffs, with different degrees of difficulty. The cave itself is known among cavers, though public access to its deeper sections is limited.
A guided tour of the Grottes de Remouchamps typically lasts approximately 1 hour and 15 minutes. This duration includes both the walking portion through the galleries and the boat ride on the underground Rubicon river.
Given the constant cool temperatures inside the caves (around 8-10°C), it's advisable to wear comfortable walking shoes and bring a light jacket or sweater. Some paths, like the Chawresse Trail, may require fording a stream, so waterproof footwear could be beneficial for those specific routes.
The Aywaille region is rich in karstic features. The Grottes de Remouchamps are particularly known for the Rubicon, an underground river, and impressive speleothems like stalactites, stalagmites, and flowstones. The area is also connected to the 'Vallon des Chantoirs,' where surface streams disappear into swallow holes to feed the underground river systems.
While the Grottes de Remouchamps offer guided tours for visitors, specific information about permits for independent caving or beginner caving tours beyond the main show caves is not detailed in the provided data. For more advanced caving, local caving clubs or specialized tour operators would be the best resource.


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