Best natural monuments around Thimister-Clermont showcase the region's undulating landscapes and natural beauty. Situated in the Land of Herve, the area features a characteristic bocage countryside with gentle hills, valleys, and woodlands. While specific natural monuments within the municipality are not widely designated, the collective environment provides extensive opportunities for outdoor activities. This makes Thimister-Clermont a destination for those seeking scenic beauty and tranquil exploration.
Last updated: October 29, 2026
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In the mid-19th century, flooding from the Göhl River posed a major threat to the mine in Bleyberg/Plombières: Water repeatedly penetrated the tunnels and claimed lives. To prevent this, a diversion of part of the river was requested and approved in 1861. By 1862, a tunnel several hundred meters long was built beneath the rock, keeping the Göhl away from the mine. The construction cost approximately 200,000 francs. The tunnel is a technical monument to mining engineering from an era when hazards were deliberately controlled while simultaneously harnessing hydropower. It demonstrates how work-related accidents were prevented while simultaneously harnessing resources.
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The site of the former Plombières mine is home to species-rich calcareous grassland meadows, now protected as a nature reserve. The exceptional flora and fauna of this area are due to the heavy metal-rich soils, particularly the presence of zinc in the subsurface. Among the natural meadow relics, visible traces of the former metal industry can still be found: – Walls from former foundry floors – Remains of old smelting furnaces – Stones from former industrial buildings A small stream meandering through the area further enriches the ecological diversity of this special place. The "Gueule" viewpoint, which offers a glimpse into a cave opening, is particularly impressive and worth a visit.
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It stands on the crest of the dam and faces north-east, towards the former district town of Eupen and the former Prussian border, which was about 5 km away. The artist was Antoine-Félix Bouré (1831–1883). The lion was completely restored in October 2000.
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The Lion, created by Félix-Antoine Bouré, is one of the major attractions. Height: 13.5m – her weight: 130 tons. 183 blocks that fit together like a puzzle were completely dismantled and rebuilt to mark the raising of the dam. The lion looks in the direction of Eupen, then Prussia, barely 5 kilometers away. Source: https://www.tourismejalhaysart.be/nl/attraction/barrage-du-lac-de-la-gileppe-jalhay-hautes-fagnes-spa/
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This work of art, made from granite, was the first of its kind in Belgium. The dam was built between 1867 and 1875. Between 1967 and 1971 it was consolidated and the capacity of the reservoir was increased to 26.4 million m³ of water. The lake is fed by the Gileppe, the Louba and the Soor. Two 75m high collection towers direct the water to turbines. The famous Lion, created by Félix-Antoine Bouré, is one of the major attractions. Height: 13.5m – her weight: 130 tons. 183 blocks that fit together like a puzzle were completely dismantled and rebuilt to mark the raising of the dam. The lion looks in the direction of Eupen, then Prussia, barely 5 kilometers away. Source: https://www.tourismejalhaysart.be/nl/attraction/barrage-du-lac-de-la-gileppe-jalhay-hautes-fagnes-spa/
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Park with "the house of the mining site", playground, information boards, picnic areas, sanitary facilities, direct access to the nature reserve and more. Info about the "Maison du Site Minier" at https://www.komoot.com/nl-nl/highlight/1038492
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Very nice place that invites you to take a little rest.
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The region is characterized by its undulating landscapes, gentle hills, and river valleys. You can explore dynamic waterways like the Meanders of the Geul, where you can observe natural erosion and deposition. The Hohnbach Valley offers diverse trails and unique flora, including daffodil meadows in spring. Additionally, man-made structures integrated into the landscape, such as the Gileppe Dam Lion, provide panoramic views over a reservoir.
Yes, several natural monuments are suitable for families. The Meanders of the Geul and the Hohnbach Valley are both marked as family-friendly. The Gileppe Dam Lion is also a great option, offering family-friendly hiking trails and tourist infrastructure. The Casino Pond is another family-friendly spot, ideal for a break or as a starting point for walks.
The area around Thimister-Clermont is excellent for various outdoor activities. You can enjoy extensive hiking and cycling trails through the wavy landscapes and bocage countryside. For cycling, there are numerous routes available, including options for touring bicycles, road cycling, and gravel biking. The former railway line 38 has been converted into part of the Ravel network, perfect for walking, mountain biking, and horse riding.
Yes, the natural monuments are often integrated into a network of trails. For instance, the Hohnbach Valley features diverse trails, and the Gileppe Dam Lion serves as a starting point for many family-friendly hiking routes. The region's overall landscape, with its gentle hills and valleys, provides a scenic backdrop for various walks and hikes.
Spring is a particularly beautiful time to visit, especially to witness the daffodil meadows in the Hohnbach Valley. However, the region's diverse landscapes and extensive trail networks make it enjoyable for outdoor activities throughout the year, with each season offering its unique charm.
Visitors frequently appreciate the tranquil beauty and diverse scenery. The meandering course of the Geul river is often highlighted for its idyllic charm, while the Hohnbach Valley is praised for its versatile trails and unique flora. The impressive structure and panoramic views from the Gileppe Dam Lion are also popular, especially for family outings.
While the region's natural beauty is largely found in its collective landscape, the Hohnbach Valley is home to the rare yellow calamine violet, which can only be found in a few specific locations due to its connection to heavy metal-containing soil. Exploring the less-traveled paths in the bocage countryside can also lead to peaceful, scenic discoveries.
The area offers a range of trails suitable for various fitness levels. You can find easy paths for leisurely walks, such as those around the Gileppe Dam Lion, and more challenging routes for experienced hikers or cyclists. For example, cycling routes in the area range from 'easy' to 'difficult' depending on the distance and elevation.
The Gileppe Dam Lion area has infrastructure designed for tourists, including a lookout tower with a restaurant, making it a convenient spot for refreshments. The village of Clermont-sur-Berwinne, recognized as one of Wallonia's most beautiful villages, also offers local amenities.
While specific winter conditions can vary, the extensive network of trails in the Land of Herve and near the natural monuments can be explored during winter. It's always advisable to check local weather conditions and trail accessibility before heading out and to wear appropriate clothing and footwear for potentially cold or icy conditions.
Yes, the Rocher du Casino Climbing Crag and Rest Area near Kelmis offers a climbing wall with a good mix of difficulties, making it a popular spot for climbers from the region. It also serves as a nice resting place.
The Gileppe Dam Lion is a man-made monument recognized for its integration with the natural landscape. It's crowned by a 13.5-meter-high sandstone lion, which is the emblem of the dam. Completed in 1878, it was the first concrete dam in Europe and offers historical significance alongside its scenic views and recreational opportunities.


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