4.5
(11)
28
hikers
01:17
4.88km
40m
Hiking
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.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Start point
Parking
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482 m
Highlight • Lake
Translated by Google •
Tip by
3.73 km
Highlight • Natural Monument
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Tip by
4.88 km
End point
Parking
Way Types & Surfaces
Way Types
2.86 km
1.95 km
< 100 m
< 100 m
Surfaces
3.02 km
1.30 km
474 m
< 100 m
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Elevation
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Weather
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Saturday 23 May
31°C
14°C
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This route was planned by komoot.
This trail is generally considered easy. It features gentle and regular slopes, making it accessible for many hikers, including families. Benches are installed along the route for resting.
The terrain is diverse, featuring stable, developed paths that often have a charcoal-like appearance, reflecting its mining past. While most slopes are gentle (3-5%), some sections can reach 6-10%. You'll encounter wet prairies, marshes, and wooded areas with different substrates of red and black schists. Note that the flanks of the terril are friable, and access to specific zones with high temperatures or toxic gas is prohibited for safety.
The trail offers a captivating mix of industrial heritage and thriving nature. You'll pass by the large, naturally formed Étang des Argales, complete with a beach. From the belvederes, you can enjoy panoramic 360-degree views of the surrounding area. The site is also a Terril des Argales, the largest flat mining spoil heap in Europe and a UNESCO World Heritage site, now a haven for biodiversity.
Parking facilities are available at the site, making it convenient to access the trailhead. The area is well-equipped with amenities for visitors.
Yes, dogs are generally allowed on the trails. However, it's always recommended to keep them on a leash, especially given the site's rich biodiversity and status as a bird sanctuary.
The trail is enjoyable year-round, but spring and autumn offer pleasant temperatures and vibrant scenery. The site is a biodiversity hotspot, so visiting during warmer months increases chances of spotting birds, lizards, and amphibians.
No, there are no specific entrance fees or permits required to access the Parc naturel régional Scarpe-Escaut or the Terril des Argales loop. The site is freely accessible to the public.
Absolutely! The Terril des Argales loop is considered 'Facile' (easy) and is very suitable for families. The well-maintained paths, gentle slopes, and available amenities like playgrounds and picnic sites make it a great option for outings with children.
Yes, the route also passes through sections of the De Bon-Secours à Arras, La Chapelle du Marais, and Le Marais des Onze Villes trails.
Yes, the site is well-equipped with amenities. You'll find playgrounds, picnic sites, restrooms, and even shelters. There are also restaurants nearby, and a chèvrerie (goat farm) on-site where you can taste local goat cheeses.
The Terril des Argales is unique because it's the largest flat mining spoil heap in Europe, spanning 140 hectares, and is inscribed on the UNESCO World Heritage list. It's a prime example of a successful reconversion of an industrial site into a protected natural space and leisure area, boasting exceptional biodiversity and recreational opportunities.