4.4
(1793)
7,893
hikers
493
hikes
Easy hiking trails in Marais D'Harchies-Hensies-Pommerœul traverse a 550-hectare marshland complex in the Haine Valley, Belgium. The region is characterized by expansive wetlands, including four main ponds and extensive reed beds. Hikers will encounter diverse environments such as mine heaps (terrils), alignments of pollard willows, wet groves, and smaller wooded areas. This unique landscape, formed by mining subsidence, offers varied terrain for easy walks.
Last updated: May 19, 2026
4.6
(146)
585
hikers
6.34km
01:36
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.7
(104)
411
hikers
6.12km
01:33
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.4
(5)
48
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(3)
8
hikers
5.30km
01:21
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(7)
7
hikers
6.88km
01:45
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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The Harchies Marshes, located in Wallonia, have a rich and eventful history. In the 18th century, the Haine Valley was bordered by wet and marshy meadows, but no body of water existed. Between 1925 and 1930, mining caused subsidence, creating depressions invaded by the water table. In the 1950s, the surface area covered by water increased, promoting exceptional biodiversity. Between 1968 and 1971, the site drained, threatening its ecosystem. From 1973-1974, preservation efforts allowed the marsh to revive. In 1986, the site was recognized as a Ramsar area, highlighting its ecological importance. Today, it covers approximately 550 hectares and is classified as a Special Protection Area. It is home to a wide variety of habitats and more than 250 bird species. It remains a popular birdwatching site for birdwatchers and nature lovers.
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Splendid little walk. Easy and marked paths. Beautiful views of the wildlife.
1
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Ornithological nature reserve, with magnificent species. Several observation points set up for bird watching. accessible to PMR.
3
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Brilliant, great passage between 2 lakes
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There are two viewing huts on the route. But especially many ornithologists. This must clearly be a special place!
9
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Rarely seen so many ornithologists together. Each with their big, long cameras!
9
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Located in the heart of the Haine valley, between Mons and Tournai, the marshy complex of Harchies-Hensies-Pommeroeul, better known as the Marais d'Harchies, is a major site for the fauna and flora of Wallonia. Covering an area of 550 hectares, this site of great biological interest is home to many species and constitutes an important transit site during bird migration and offers ideal conditions for the nesting and wintering of numerous species. Its registration as a “Ramsar” wetland confirms its importance on an international scale. https://oiseaumaraisdharchies.be/
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Marais D'Harchies-Hensies-Pommerœul offers a wide selection of easy hiking trails, with over 190 routes suitable for all skill levels. These trails are highly rated by the komoot community, with an average score of 4.5 stars.
The easy hikes in Marais D'Harchies-Hensies-Pommerœul primarily traverse a unique wetland ecosystem. You'll find paths through expansive reed beds, alongside four main ponds, and past alignments of pollard willows. Some routes also feature former mine heaps (terrils), offering a contrast to the aquatic environments.
The marshlands are beautiful year-round, but spring and autumn are particularly rewarding for birdwatching, as the area is a crucial transit point for migratory birds. Summer offers lush greenery, while winter can provide a serene, stark beauty. Always check local weather conditions before heading out.
While exploring the easy trails, you can discover several natural highlights. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve itself is a key attraction, offering pristine natural environments. You'll also encounter the expansive Harchies-Hensies-Pommerœul Marsh and the distinctive area known as Les Catillons, known for its diverse flora and fauna.
Yes, an interesting man-made landmark within the natural setting is the Harchies-Pommeroeul Lock Complex. This large lock on the canal is notable as the last of its kind in Belgium and provides an interesting point of interest along some routes.
Absolutely. Marais D'Harchies-Hensies-Pommerœul is a major ornithological site, with over 300 bird species observed. The extensive reed beds and wetland habitats provide ideal conditions for birdwatching, even on easy trails. There are viewing huts available to enhance the experience.
Many of the easy trails are suitable for families, offering relatively flat paths and engaging natural scenery. For example, the Les Catillons – Hunting Avenue loop from Marais d'Harchies-Hensies-Pommerœul is a shorter, easy option that families might enjoy.
While many trails in the region are dog-friendly, it's always best to check specific route regulations, especially within nature reserves, to ensure dogs are permitted and if they need to be on a leash. The marshland environment can be sensitive, so respecting local guidelines is important.
Yes, the region is known for its efforts in accessibility. There is a specific 6.5 km circuit with seven observation points that is accessible to people with reduced mobility with assistance, allowing everyone to enjoy the natural beauty of the marshlands.
Yes, many easy routes in the area are circular, allowing you to start and end at the same point. A popular option is the Les Catillons – Hunting Avenue loop from Pommerœul, which offers scenic views of the wetland ecosystem.
Parking is generally available near the main access points to the marshlands and trailheads. For example, routes starting from Bernissart or Pommerœul often have designated parking areas nearby, making it convenient to access trails like the Canal Pommerœul-Antoing loop from Bernissart.
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 1600 reviews. Reviewers often praise the tranquil wetland scenery, the abundance of birdlife, and the generally flat, well-maintained paths that make for enjoyable and accessible walks.


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