Natural monuments around Baelen, a municipality in Belgium, offer diverse natural features within the Ardennes region. The area is characterized by its unique landscapes, including expansive moors, deep wooded gorges, and significant water bodies. Visitors can explore a variety of natural attractions, from cascading waterfalls to ancient fens. This region provides opportunities to experience distinct ecosystems and geological formations.
Last updated: May 14, 2026
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According to local tradition, an old legend explains the origin of the Teufelsley (Devil's Rock). The devil was said to have been enraged because a monastery was to be built in the region. In his anger, he dislodged a massive boulder from the heights to destroy the structure. However, as he approached with the stone, an angel intervened, thwarting the devil's plan and stopping his attack. The rock brought by the devil then remained in its present location and has been called Teufelsley ever since.
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At this point there is a larger moor lake, which makes a nice photo motif, especially in fog. Above this, this moor lake is regularly visited by waterfowl such as wild ducks. If there are few people on the jetties and you approach the lake(s) quietly, there is a high probability that the animals will not be startled and scared away.
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The peat that can be found everywhere in the bog and fen areas is the result of a process of incomplete decomposition. Usually, dead plants are gradually decomposed by small animals (such as earthworms), bacteria and fungi. This process applies to well-drained soils. On impervious acidic soils that do not contain many bacteria and in humid climates, plants such as peat moss are only partially decomposed. Their superimposition forms the peat layer. This peat layer can be up to 7 m in certain places here in the Brackvenn. 1 mm layer of peat takes 1 year to form. With a peat layer of 7 m, for example, we are talking about a period of 7,000 years.
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Anyone who sees the beauty of the raised and low moors will never be able to let it go. The colors of the landscape, indeed the entire appearance of the High Fens, change dramatically every season. Even in winter - a breathtakingly beautiful landscape.
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What is often called a lake in the Fens is often e.g. Palsas. The palsen or pingos in the High Fens were formed around 10,000 to 11,000 years ago at the end of the last ice age. When the ground froze deep down during the cold winters of the Ice Age, the wet ground expanded and frost mounds developed. Over the years these mounds grew and the soil material that was on top slid down the sides of the mounds and over time formed a ring-shaped wall around the mound of frost. With the end of the ice age, the ice melted, the frost mound sagged and the wall was preserved. The water in the middle is called bog scour or bog eye. Source: euregio-im-bild.de/fotos/palsen-im-brackvenn-bei-m-tzenich.html
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What a unique landscape! Warning: hiking in the High Fens can be addictive :-)
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Beautiful rock formation in the Rur Valley.
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The nature reserve Unteres Perlenbachtal with the rock formations of the Teufelsley and Engelsley are located in the area of the city of Monschau. The lower course of the Perlbach includes two forest and rocky sections. In between lies the Perlenbachtalsperre. Mostly middle-aged spruces grow on the slopes. Some of the larger cliffs have been upgraded to viewpoints. A heather-like vegetation has developed in places on the rocks. Numerous ferns thrive in the shady area, including the rare thin fern (Trichomanes speciosum). The lower part of the Perlenbach up to the confluence with the Rur is accompanied by riparian forests.
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Baelen is surrounded by diverse natural features. You can discover expansive moors like the Hohes Venn, deep wooded gorges such as the Trôs Marets Valley, and significant water bodies including the Brackvenn Moor Lakes. The region also features impressive waterfalls like the Bayehon Waterfall and unique rock formations like the Teufelsley Rock Formation.
Yes, several natural monuments are suitable for families. The Bayehon Waterfall is easily accessible with nearby parking at the Moulin de Bayehon watermill, making it appealing for families. The Teufelsley Rock Formation is also categorized as family-friendly, offering great views over the Rur Valley.
The area around Baelen offers a variety of hiking trails. You can find attractive paths crisscrossing the deep, wooded gorge of the Bayehon Waterfall, or explore the idyllic Trôs Marets Valley, which is suitable for both families and hikers with dogs. The Hohes Venn Moor also features wooden boardwalks for exploring its unique landscape. For more challenging options, the Ridge Trail above Perlenau offers a demanding, rocky, and root-riddled experience.
The natural monuments around Baelen offer unique experiences throughout the year. The Hohes Venn Moor, for instance, changes dramatically every season, with its colors and appearance transforming. In winter, it becomes a popular spot for cross-country skiing. For waterfalls and lush scenery, spring and autumn are particularly beautiful, while summer allows for longer days to explore.
Yes, the region boasts sites with significant geological interest. The Brackvenn Moor Lakes, part of the Hohes Venn, are notable for their peat formation, which can be up to 7 meters thick in some places, representing thousands of years of geological processes. The palsen or pingos in the High Fens were formed at the end of the last ice age, around 10,000 to 11,000 years ago.
Beyond exploring the natural monuments themselves, the Baelen area is excellent for various outdoor activities. You can find numerous MTB trails, running routes, and cycling paths. The Hohes Venn Moor is also popular for cross-country skiing in winter.
When hiking, especially in areas like the High Fens or gorges, sturdy shoes and sure-footedness are essential. Some paths can be very covered with roots and slippery in wet weather. It's also advisable to consider appropriate clothing for colder temperatures, winds, and a wetter climate, as conditions can change rapidly.
Many natural areas around Baelen are dog-friendly. For example, the hike through the Trôs Marets Valley is suitable for hikers with dogs. Always ensure your dog is on a leash and that you follow local regulations, especially in nature reserves to protect wildlife.
Yes, several natural monuments provide excellent viewpoints. The Teufelsley Rock Formation offers great vantage points over the Rur Valley. The expansive Hohes Venn Moor also provides vast, open views across its unique landscape of fens, meadows, and forests.
Parking is often available near popular natural monuments. For instance, the Bayehon Waterfall is easily accessible with parking available at the nearby Moulin de Bayehon watermill. When planning your visit, it's always recommended to check specific access points for each monument.
The Hohes Venn Moor is a vast nature reserve spanning 5000 hectares, characterized by its unique landscape of fens, meadows, and forests. It's known for its thick moss pillows, especially peat moss, which thrives in humid, nutrient-poor conditions, leading to significant peat formation. This unique ecosystem supports diverse flora like common heather, bell heather, and sedges, offering a truly immersive natural experience.
Visitors frequently appreciate the idyllic settings and the feeling of being immersed in nature. The wild river accompanying the hike through the Trôs Marets Valley is often highlighted. The challenging yet beautiful trails, like the Ridge Trail above Perlenau, are praised for their 'high mountain' feel. The unique beauty and changing appearance of the Hohes Venn Moor throughout the seasons also receive high acclaim.


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