Best natural monuments around Modave are primarily found within the vast Domaine de Modave and its nature reserve, a significant Natura 2000 site. This area features diverse ecosystems, including extensive forests and the dramatic Hoyoux Valley, which is carved through limestone. The region serves as a crucial water catchment area, highlighting its environmental importance. Visitors can explore a variety of landscapes, from ravined maple forests to calcareous grasslands.
Last updated: June 28, 2026
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Popular around Modave
The gravel pit is a very rich site for photo enthusiasts or for walkers who wish to walk on maintained paths and observe birds in complete tranquility. Site recommended for walkers and photographers. Please, can you respect the rules such as keeping your dog on a leash (even if some people think they won't do any harm by letting their dog off the leash, know that you have animals with predator instincts which could scare away some species of birds that nest on the ground, like the kingfisher) and not swimming so as not to disturb the birds that are there. Thank you to all those who will respect the rules and I wish you a good hike or a good photo outing 🙏.
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Excavations are conducted year-round at Moha Castle, making it unique in Belgium. When I visited, two archaeologists were uncovering a wall that runs beneath the visible castle and likely dates back to the 12th century.
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The castle is free to visit. At the foot of the rock, there's a visitor center where you can pick up a badge to open the gate. For €4, you can also get a brochure with information about the most important points. The castle is only open to visitors starting in April, but the friendly man at the visitor center let me in on February 27th... as far as you can even call it "inside" at this ruin ;-)
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The exact origins of the medieval County of Moha remain unknown. It is likely that the county was formed during the fragmentation of the Carolingian Empire and the Hesbaye region at the end of the 9th century. The first known count, Albert of Moha, is mentioned in a document dated 1026 or 1028. The first defensive stone walls also date from the first half of the 11th century. Having no male heir, Albert of Moha married his daughter to Henry I of Dasbourg around 1050, thus linking the county's destiny to that of this powerful family of Alsatian origin. Initially, it is highly unlikely that the Counts of Dasbourg regularly resided in Moha, entrusting the county's administration to trusted men and a small garrison. However, the situation changed with Hugh II (1130-1180) and his son Albert II (d. 1212), who decided to become more involved in the region's politics. Albert II, in particular, chose to align his interests with those of his nephew, Duke Henry I of Brabant, whose policies he would follow until the end of the 12th century. In 1204, Count Albert III, having lost hope of having a son, chose the Prince-Bishop of Liège as his heir. But the late birth of his daughter Gertrude would jeopardize these agreements. Quickly betrothed to Thibaut of Lorraine, who died in 1219, she then married Thibaut of Champagne, who repudiated her, and subsequently Simon of Linange. At 19, she died childless. On March 19, 1225, the Prince-Bishop of Liège, Hugues de Pierrepont, took possession of Moha. Under the Prince-Bishops, Moha became a prison for political prisoners and a fortification tasked with controlling the city of Huy and blockading merchants. This policy was deeply unpopular and led to reprisals: the people of Huy besieged Moha in 1255. The fortress of Moha was considered impregnable. It was therefore through trickery that the people of Huy, taking advantage of a request for a truce, seized the castle on May 6, 1376. After the attack on the castle, the site's history is largely unknown. Mass is still celebrated twice a year in the castle chapel. During the 18th century, the ruins served as a refuge for a hermit. The castle's stones were gradually plundered, notably to build the surrounding houses. In 1889, the ruins of the castle were purchased by the Belgian state. Source: https://chateaumoha.be/histoire
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The "Rocher du Château de Moha" is a limestone outcrop rising from the Mehaigne valley. It was a strategically important site in the Middle Ages, when more castles were built on rocks. This made the site difficult to besiege, and it was well-placed as a control point over the valley. The rock is very recognizable in the landscape. The ruins on the rock are still clearly visible, and the medieval structures are still easily recognizable.
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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 unique natural phenomenon of the Poudingue d’Ombret: a type of rock formed from deposits of river alluvium, approximately 395 million years old, with large stones surrounded by smaller sediments.
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The Modave region is rich in natural beauty, primarily centered around the vast Modave Nature Reserve and the picturesque Hoyoux Valley. You'll find extensive forests, ravined maple forests, and calcareous grasslands. The reserve is a significant Natura 2000 site, protecting diverse ecosystems. The Hoyoux Valley, carved through limestone, offers dramatic landscapes and panoramic views, especially from Modave Castle.
Yes, several natural monuments in the Modave area are suitable for families. Modave Castle, with its impressive natural surroundings and gardens, is considered family-friendly. Another excellent option is the Amay Gravel Pit, a protected natural area with a 2.5-kilometer path and educational panels, perfect for a family walk and bird watching.
The region boasts fascinating geological sites. The Poudingue d'Ombret Trail features a unique geological formation from an ancient river delta, revealing how sediments accumulated over millions of years to form a natural concrete of pebbles and quartz. Additionally, the Trou Manto cave system, located in the Solières valley, is an impressive karst phenomenon with a complex network of tunnels, stalactites, and columns.
Modave's natural areas are home to diverse wildlife. In the Hoyoux Valley, you might spot the dipper, a star species of the area, along the river. The Amay Gravel Pit is particularly notable for birdwatching, hosting more than 120 species of birds. The broader Modave Nature Reserve protects a variety of flora and fauna, including rare species like the Matteuccia fern.
Absolutely. The Modave region offers numerous hiking opportunities. You can find trails around the Modave Castle and within the Modave Nature Reserve. For more specific routes, explore the Running Trails around Modave guide, which includes routes like the 'Old Station – Hoyoux Valley loop' that are also suitable for walking.
The natural monuments in Modave can be enjoyed throughout the year, each season offering a different charm. Spring and summer are ideal for seeing the calcareous grasslands in bloom with orchids. Autumn brings vibrant colors to the barberry and euonymus bushes in the Hoyoux Valley. While some caves like Trou Manto might be challenging in wet weather, the forests and trails are generally accessible, offering tranquil settings for walks.
Many natural areas in Modave, including the extensive forests and trails within the Modave Nature Reserve, are generally dog-friendly. However, it's always recommended to keep dogs on a leash to protect local wildlife and ensure a pleasant experience for all visitors. Specific rules may apply to certain protected areas or inside castle grounds, so check local signage.
Beyond hiking, the Modave area is excellent for various outdoor activities. You can find numerous cycling routes, including those suitable for touring bicycles and mountain bikes. Check out the Cycling around Modave and MTB Trails around Modave guides for detailed routes that often pass by or through these natural landscapes.
Yes, the Modave region beautifully blends history with nature. Modave Castle itself is a prime example, perched on a rocky promontory overlooking the Hoyoux Valley within a nature reserve. Another significant site is Moha Castle, a medieval feudal castle built on a strategic limestone outcrop, the 'Rocher du Château de Moha,' at the confluence of two rivers.
For exploring Modave's natural monuments, sturdy walking shoes are highly recommended, especially for trails like the Poudingue d'Ombret Trail or if you plan to venture near caves like Trou Manto where paths can be rocky. Layered clothing is advisable to adapt to changing weather conditions, and rain gear is always a good idea in Belgium.
While specific cafes might not be directly adjacent to every natural monument, the town of Modave and nearby villages offer options for refreshments. For instance, after visiting Modave Castle, you'll find facilities within the domain or in the village. It's always a good idea to check opening hours in advance, especially during off-peak seasons.
The time required varies greatly depending on the monument and your activity. A visit to the grounds of Modave Castle and its immediate natural surroundings could take a few hours. Exploring the Amay Gravel Pit with its 2.5 km path might take 1-2 hours. For more extensive hikes in the Modave Nature Reserve or to reach sites like Trou Manto, plan for half a day or more.


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