Best natural monuments around Pecquencourt are found within a region known for its ecological regeneration and diverse natural features. The area, once shaped by industrial heritage, now offers a variety of reclaimed landscapes. These sites include former mining spoil heaps transformed into natural areas, as well as significant peat bogs and meadows. Visitors can explore these unique environments, which contribute to the region's biodiversity and provide opportunities for outdoor activities.
Last updated: May 20, 2026
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beautiful mountain bike playground
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You can enjoy this site composed of several natural and artificial ponds. It is a rich natural environment with a birch forest. There are many rare plant species and the European nightjar frequents the site during the nesting period.
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You can enjoy this site composed of several natural and artificial ponds. It is a rich natural environment with a birch forest. There are many rare plant species and the European nightjar frequents the site during the nesting period.
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Mandatory and iconic stopover in the region
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fairly steep climb but not too high (40m D +)
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Heap and nice natural area with schist tracks. Accessible by mountain bike and gravel. Possibility of reaching the top, which is not very high, but which allows to have a panoramic view of the surroundings.
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Accessible by gravel if you follow the trail. Please note that the entrance on the Bruille lez Marchiennes side has been blocked off to prevent the passage of cars. it will be necessary to climb some rocks to pass.
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A small part is accessible by bicycle but you will have to cross a few rocks which prevent motor vehicles from venturing there.
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The region around Pecquencourt offers a diverse range of natural features, primarily stemming from its industrial past. You can explore reclaimed mining spoil heaps, which have been transformed into significant natural areas like Terril des Argales, now an ornithological reserve. There are also important peat bogs, such as the Réserve naturelle régionale de la Tourbière de Vred, and traditional meadows, like those found at the Réserve naturelle régionale du Pré des Nonnettes. These sites contribute to the region's biodiversity and offer unique landscapes.
Yes, there are several hiking opportunities. For example, Terril des Argales features over 7 kilometers of paths. You can find various routes, including easy circular walks like the Terril des Argales Loop, which is just under 5 km. The broader Parc Naturel Régional Scarpe-Escaut also offers extensive trails for exploring its forests, meadows, and river landscapes.
Beyond hiking, the area is suitable for various outdoor activities. You can enjoy running on trails like the Germignies Circuit Trail or the Lac des Argales loop. Gravel biking is also popular, with routes such as the Étang des Argales – Marchiennes State Forest loop. Many of the former mining spoil heaps, like Roost-Warendin Slag Heap 138, are known for their varied terrain, making them excellent for mountain biking.
Many natural sites in the region are suitable for families. The Germignies Marsh and Spoil Heap is noted as family-friendly, offering natural and artificial ponds and a birch forest. The Étang des Nonettes, near the Réserve naturelle régionale du Pré des Nonnettes, also features a fitness area and children's playground, blending nature with recreational facilities.
While specific dog policies can vary by site, many natural areas and trails in the region are generally dog-friendly, especially if dogs are kept on a leash. For instance, the extensive paths at Terril des Argales and the trails within the Parc Naturel Régional Scarpe-Escaut are popular for walks with pets. Always check local signage for any specific restrictions.
The natural monuments around Pecquencourt can be enjoyed throughout the year, each season offering a different experience. Spring and autumn are ideal for hiking and nature observation due to milder temperatures and vibrant foliage or blooming flora. Summer is great for longer days and outdoor activities, while winter can offer a unique, serene landscape, especially for those interested in winter hiking, though some paths might be muddy.
Several natural monuments offer excellent viewpoints. Terril des Argales provides an unobstructed view of the region from its promontories. Similarly, Terril de Roeulx features a summit that, despite not being very high, offers a panoramic view of the surroundings, accessible via schist tracks.
The natural monuments are rich in biodiversity. Terril des Argales is an ornithological reserve, making it excellent for birdwatching, including migratory stopovers and breeding birds. Wetland birds, natterjack toads, and various plant species thrive here. The Germignies Marsh and Spoil Heap is home to rare plant species and the European nightjar during nesting season. Peat bogs like the Réserve naturelle régionale de la Tourbière de Vred also host unique flora and fauna adapted to their specific conditions.
Yes, there are easy walking trails available. The Terril des Argales Loop is rated as easy, covering approximately 4.8 km. The paths around the pond at Terril des Argales are also well-laid out and suitable for relaxed strolls. The Étang des Nonettes offers a walking path that combines nature with recreational facilities.
Access to these natural monuments is generally straightforward. Many sites, like Terril des Argales, have dedicated parking areas. While public transport options might be limited for some specific sites, the region is well-connected by roads. Some areas, like Terril 125 of Sainte-Marie, may require navigating some rocks if accessing by bicycle, as vehicle access has been restricted in certain spots to preserve the natural environment.
The Terril des Argales is significant because it's the largest former mining spoil heap in the Nord-Pas-de-Calais mining basin, covering 140 hectares. It has been successfully transformed into a vital natural area and ornithological reserve, playing a crucial role in ecological regeneration. It supports wetland bird conservation, offers 7 kilometers of paths, and provides viewpoints with interpretive panels detailing its history and geology.
Beyond the more prominent sites, the region holds several lesser-known natural areas. The Germignies Marsh and Spoil Heap is a rich natural environment with several ponds and a birch forest, known for rare plant species and the European nightjar. Roost-Warendin Slag Heap 138, while smaller, offers a labyrinth of single tracks among birch trees, providing a unique experience for those who enjoy getting a little lost in nature.


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