4.4
(6659)
37,311
hikers
765
hikes
Easy hiking trails in Vlaams Natuurreservaat Helderbeek-Terril traverse a diverse landscape that includes the Helderbeek valley, characterized by peaty grasslands, swamp forests, and hay meadows. A prominent feature is the Mijnterril Heusden-Zolder, a former mining spoil heap rising 85 meters above the surrounding terrain, providing unique topographical features and views. The region combines brook valleys, fens, dunes, forests, fields, and heathlands, offering varied terrain for hikers. This area provides a mix of natural and transformed industrial landscapes.
Last updated: June 30, 2026
4.2
(24)
189
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.3
(19)
200
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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15
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
13
hikers
2.92km
00:46
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
8
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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@jeroen driesen: It's because of this behavior from you cyclists that we keep hearing about "cycling terrorists." The Heusden-Zolder slag heap is a protected nature reserve, and if cycling is prohibited there, there's a good reason for it, and you shouldn't be disrupting nature there!
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From November to the end of February annual winter break... we'll have to come back in the summer 😏
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Landewald Janssen, a Franciscan Friar Minor, was an adept naturalist in various fields. His numerous publications, including those in De Wielewaal, Natura-Limburg, and in publications of the Limburgs Landschap, dealt with plants, mushrooms, mosses, lichens, insects, and, not least, birds. As a follower of the teachings of Francis of Assisi, he celebrated nature and creation in his lyrical poems, which appeared in various collections. He founded several important Limburg "Ornithological Study Centers," including Wijvenheide, Terlaemen, Kolberg, Ter Donk, Platwijers, Meylandt-Obbeek-Stabroek, Kelchterhoef, and Herkenrodebossen. Thanks to Landewald Janssen's work, these areas received the highest level of protection under the regional plan. Since then, they have partially or largely evolved into fully-fledged nature reserves. Janssen was also the founder of the Limburg Nature Conservation Action (NAL), along with fellow conservationists Gust Claes and René Neven. He would later oversee the protection of the Berkenbosbeek and Galgenberg streams (Heusden-Zolder). Source: https://www.provinciaalnatuurcentrum.be/files/Kennisbank/Avifauna-preview-spreads.pdf
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The only remaining mortuary of all the Limburg mines is located on the Zolder mine site. Unfortunately, fatal accidents occurred regularly during mining. This former mortuary was used to store the body of a deceased employee before it could be released for autopsy and burial. When a body was stored in the mortuary, the light was always turned on. This way, the miners knew that one of their comrades had died. A scene created by artist Stefan Elsen is depicted on the back wall of the mortuary. The art installation against the wall of the mortuary consists of a white block of Carrara marble that suggests the table on which the bodies were laid out. The floating body above it gives the impression that it is slowly rising or descending. That hanging body consists of small mirrors. After all, every miner used to have a mirror in his wardrobe, in which he could see whether his face was clean enough to return to his family or loved one. Hundreds of miners (930 in all the Limburg mines) have died in an industrial accident in the mine and have no longer been able to look in a mirror...
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The top of the Heusden-Zolder mine spoil tip was rewarded with no less than three landscape stars. The three-star spot is located at an altitude of 155 m above sea level. The top extends 85 meters above the surroundings. More about the Heusden-Zolder mine spoil tip and that top: https://www.visitlimburg.be/nl/wat-te-doen/mijnterril-heusden-zolder
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Coal mining in Heusden-Zolder started in 1923 and lasted until 1992. The slag heap is made up of stones that were brought to the surface during coal mining. Over the years, the top has risen to 155m above sea level. Since 1997, it has been a Flemish nature reserve. Sheep are used for the nature management of the slag heap and the adjacent heathland. By grazing, they ensure a firm grass mat and prevent the growth of trees. This is necessary to prevent erosion. The slopes on the south side of the slag heap have their own microclimate, which is why many rare plant and animal species find their home here.
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The slag heaps rise more than a hundred metres above the landscape and are therefore the ideal places to get an aerial view of the green, wooded Limburg. The view of the slag heap of Heusden-Zolder is so phenomenal that this spot has been awarded three landscape stars.
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Vlaams Natuurreservaat Helderbeek-Terril offers nearly 460 easy hiking trails. These routes traverse diverse landscapes, including the Helderbeek valley and the Mijnterril Heusden-Zolder.
Easy hikes in Helderbeek-Terril feature a varied landscape. You'll encounter brook valleys, peaty grasslands, swamp forests, fens, dunes, forests, fields, and heathlands. The prominent Mijnterril Heusden-Zolder also adds unique microclimates due to its slate composition.
Yes, many easy trails are suitable for families. The reserve's diverse terrain and relatively short distances make it ideal for walks with children. Consider routes that explore the Helderbeek valley for a gentle experience.
Yes, Vlaams Natuurreservaat Helderbeek-Terril is dog-friendly. There are specific routes designed for dogs, such as the Dog Off-Leash Area loop from Heusden (2.7 km) and the Dog Off-Leash Area – Heusden-Zolder Mining Heap loop from Vroegere mijnschacht 1 (4.1 km). Please ensure your dog is kept on a leash where required and respect local regulations.
The most prominent landmark is the Mijnterril Heusden-Zolder, a former spoil heap reaching 85 meters above ground level, now a nature reserve. You can also explore the picturesque Helderbeek valley with its peaty grasslands and swamp forests. For specific viewpoints, check out the Three-Star Point, Summit of Heusden-Zolder Spoil Tip or the View of the Heath in Helderbeek-Terril Nature Reserve.
Yes, many easy trails in the reserve are circular, allowing you to start and end at the same point. An example is the View of the Terril – Heusden-Zolder Mining Heap loop from Koersel, which is 5.4 km long and offers views of the terril.
Easy trails in Helderbeek-Terril vary in length, but many are between 2.5 km and 6 km. For instance, the View of the Terril – Heusden-Zolder Mining Heap loop from Koersel is 5.4 km and takes about 1 hour 30 minutes, while the View of the Terril loop from Vroegere mijnschacht 1 is 2.9 km and takes around 45 minutes.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 6,000 reviews. Reviewers often praise the diverse landscapes, the unique experience of hiking around the former mining heap, and the peaceful natural surroundings of the Helderbeek valley.
Yes, the visitor center 'De Watersnip' offers resources and information about the various nature reserves in the vicinity, including Vlaams Natuurreservaat Helderbeek-Terril.
The reserve is enjoyable year-round. Spring brings blooming flora, while autumn offers vibrant colors. Summer is pleasant for longer walks, and even winter can be beautiful with a dusting of snow. The varied terrain ensures interesting views regardless of the season.
While the guide focuses on the trails themselves, some routes might pass by or near local establishments. For example, the Rossi Ice Cream Bar – 't Kruiske Farm loop from Schachtbok voormalige Koolmijn Zolder suggests a refreshment stop. You can find more options in nearby towns like Heusden-Zolder.
The Helderbeek valley is known for its rich biodiversity, especially for birdwatching. You might spot species such as the nightjar, woodlark, black woodpecker, sparrowhawk, goshawk, and kingfisher, among others, thanks to the varied habitats.


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