4.5
(1009)
3,623
hikers
195
hikes
Hiking around Somain offers diverse landscapes, primarily shaped by reclaimed industrial features and natural parklands. The region is characterized by the unique Terril des Argales, a former mining spoil heap now re-naturalized with an expansive pond, and the broader Scarpe-Escaut Regional Nature Park, featuring forests, marshlands, and winding rivers. This blend provides a variety of terrains, from mineral landscapes to aquatic environments and dense woodlands, suitable for different hiking experiences.
Last updated: June 25, 2026
4.5
(11)
30
hikers
4.88km
01:17
40m
40m
Hike the easy 3.0-mile (4.9 km) loop at Terril des Argales from Rieulay, offering unique views and rich biodiversity in Scarpe-Escaut.
4.6
(53)
385
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.6
(17)
63
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.6
(17)
71
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.4
(5)
14
hikers
11.2km
02:51
40m
40m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Beautiful walk on a magnificent site
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Great place to run on several routes or hike with the family
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The Carrière des Peupliers in Abscon is a former chalk and marl quarry used to produce lime for the USINOR factory in Denain. These industrial activities have significantly changed the landscape of the Denaisis plain. After the end of the industrial activities, the land was transferred to the Nord department. Today, the area is an interesting place for nature lovers and offers a unique insight into the industrial history of the region.
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The Rieulay slag heap, also known as the Argales slag heap, is the largest in the region with its 140 hectares. Formerly an industrial site for the storage of waste rock from the surrounding mines, it has been converted into a protected natural area and a place for leisure.
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view of Lake Argales and the surrounding towns, at the highest point without going up very high
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The Argales de Rieulay slag heap, the largest in the region (140 ha), has long since closed its mining page. A new story has been unfolding for several years now. That of a successful reconversion.
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Artificial beach on the body of water
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The Somain area offers a wide variety of hiking experiences, with over 190 routes available. These range from easy strolls to more moderate excursions, ensuring there's something for every hiker.
Yes, the region is excellent for families. The Terril des Argales Loop is an easy 4.9 km trail around the re-naturalized former mining spoil heap, offering gentle slopes and diverse scenery suitable for all ages. The Terril des Argales itself has an accessible 4 km loop, perfect for family outings.
Many trails in the Somain area, particularly within the Terril des Argales and the Scarpe-Escaut Regional Nature Park, are dog-friendly. It's always recommended to keep dogs on a leash to protect the local wildlife, especially in areas designated as 'Espace Naturel Sensible' or Natura 2000 sites, which are rich in biodiversity.
Yes, circular routes are a popular feature. The Viewpoint over the lake – Argales Pond loop from Rieulay is a great example, offering scenic views across the Étang des Argales. Another option is the Terril des Argales Beach loop from Rieulay, which explores the varied terrain around the lake.
Hiking near Somain offers a unique blend of landscapes. You'll encounter the reclaimed industrial beauty of the Terril des Argales, with its mineral landscapes, aquatic environments around the Étang des Argales, and panoramic views. The nearby Scarpe-Escaut Regional Nature Park provides a gorgeous patchwork of forests, marshlands, and winding rivers, offering diverse scenery from dense woodlands to mirror-like ponds.
Parking is generally available at designated areas around the Terril des Argales in Rieulay. These spots are usually well-indicated and provide convenient access to the trailheads for the various loops around the site and the Étang des Argales.
While specific public transport routes can vary, the Terril des Argales is a well-known recreational area. It's advisable to check local bus schedules or regional transport options that connect Somain to Rieulay, the village adjacent to the Terril des Argales, for the most up-to-date information.
The most prominent natural feature is the Étang des Argales, a large pond formed by the sinking of the Terril des Argales. This area is a haven for wildlife, including numerous bird species, and is recognized as an 'Espace Naturel Sensible' and Natura 2000 site. You might also spot the Terril des Argales Beach, a sandy area popular in summer.
The Somain region, located in northern France, is generally pleasant for hiking from spring through autumn. Spring brings blooming flora, while autumn offers beautiful foliage. Summer is also suitable, especially around the Étang des Argales where swimming is possible. Winter hiking is possible, but trails might be muddy or require appropriate gear.
Yes, the area caters to various fitness levels. There are 103 easy routes, perfect for leisurely walks, and 92 moderate routes for those seeking a bit more challenge. A few difficult routes are also available for experienced hikers looking for a more strenuous adventure.
The trails around Somain are highly regarded by the komoot community, boasting an average rating of 4.5 stars from over 800 reviews. Hikers often praise the unique landscapes of the Terril des Argales, the tranquility of the Scarpe-Escaut Regional Nature Park, and the well-maintained paths that make for enjoyable outings.
Yes, a detailed map of the Terril des Argales, including its trails and points of interest, is available. You can often find it through local tourism offices or online. For a comprehensive overview, you can refer to this resource: Plan du Terril des Argales.


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