Best natural monuments around Ohey are found within the Condroz plateau, a region characterized by rolling hills, forests, and river valleys. The area offers a blend of natural landscapes and historical elements, providing diverse opportunities for exploration. Notable natural features include impressive rock formations and significant river systems. This region presents a variety of natural sites for outdoor enthusiasts.
Last updated: May 17, 2026
Highlight • Castle
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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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The Arville Cave is located near Arville Castle in Faulx-les-Tombes and consists of several smaller cavities collectively known as the "Arville Caves." The most famous cavity is the actual Arville Cave (also known as the Trou du Chantoir), which is located on the northern slope of a paleokarst depression. This depression has a nearly permanent pond at its bottom, the water level of which varies with the seasons. The caves are not open to the public or tourists. They are primarily an interesting karst area for geological and local nature walks.
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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 Château de Moha is a medieval feudal castle in Wanze, built on a rock at the confluence of the Mehaigne and Fosseroule rivers. Dating back to the 7th century, the castle served as a defense for the region. It became the property of the Prince-Bishops of Liège, who used it as a fortress and prison. In 1376, the castle was captured by the inhabitants of Huy through deception, marking the end of its military function. The castle subsequently fell into disrepair, but the ruins have been preserved and are open to the public.
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The Ohey area, situated in the Condroz plateau, is characterized by rolling hills, lush forests, and picturesque countryside. The region also features significant river systems like the Hoyoux, known for its dynamic landscape. You'll find a harmonious blend of natural beauty and historical elements throughout the area.
Yes, several natural monuments in the Ohey area are intertwined with history. For example, Moha Castle is built on a prominent limestone outcrop, known as the Rocher du Château de Moha, which served as a strategic site in the Middle Ages. Similarly, Modave Castle is nestled within a nature reserve, dominating the Hoyoux valley with its medieval keep.
The region offers interesting geological formations. The limestone outcrop supporting Moha Castle is a very recognizable landmark. You can also explore karst phenomena like Trou Manto, a collection of caves with complex tunnels and magnificent stalactites, or the Arville Cave, a karst site with multiple cavities.
The area around Ohey is excellent for various outdoor activities. You can find numerous routes for hiking, cycling, and mountain biking. These trails often pass by or offer views of the natural monuments and the scenic Condroz plateau.
Yes, there are many hiking opportunities. For instance, the area around Modave Castle is within a nature reserve, offering walks through its gardens. Exploring Trou Manto involves a steep climb or descent over a rocky path. You can find detailed hiking routes in the Hiking around Ohey guide.
Yes, Modave Castle is considered family-friendly, offering visits to the castle and its gardens within a beautiful natural setting. While some natural sites like caves might be more challenging, the general landscape of rolling hills and forests provides ample opportunities for family walks and exploration.
The natural monuments around Ohey can be enjoyed throughout the warmer months, generally from spring to autumn. Spring brings lush greenery and blooming flora, while autumn offers vibrant fall colors. Some sites, like Modave Castle, have specific opening seasons, typically from April to mid-November, so it's advisable to check their schedules.
Absolutely. Moha Castle, perched on its limestone outcrop, offers beautiful views of the Mehaigne valley. The Moha Quarry also features a dedicated viewpoint with benches, providing a unique perspective over the turquoise lake and the quarry itself.
Visitors appreciate the blend of natural beauty and historical context. The impressive rock formations, such as the one supporting Moha Castle, and the extensive cave systems like Trou Manto, are highly valued. The opportunity to explore castles set within nature reserves, like Modave Castle, also receives positive feedback.
Yes, some natural monuments present more challenging access. Trou Manto, for instance, requires a steep climb or descent over a rocky path. Similarly, the Arville Cave system is primarily for caving enthusiasts and not generally open to the public for casual visits.
While the quarry itself is an active industrial site and not directly accessible, you can visit the viewpoint overlooking the Moha Quarry. There's an educational walk called the “Promenade de la Pierre” with informative panels, and you can see the distinctive turquoise lake from the viewpoint.
Policies for dogs can vary by specific site. For example, while the natural surroundings are generally dog-friendly, access to the interior of historical sites like Modave Castle or protected natural areas like Trou Manto (due to bat protection) might be restricted. It's always best to check individual site regulations beforehand.


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