Best natural monuments around Nœux-Les-Mines are primarily rehabilitated industrial sites, offering unique ecological features and recreational opportunities. The region's landscape is characterized by former coal mining areas, with many natural monuments being repurposed slag heaps known as *terrils*. These sites showcase a transition from an industrial past to green tourism, providing distinct natural and historical points of interest. Visitors can explore a blend of historical context, unique ecological characteristics, and outdoor activities.
Last updated: July 4, 2026
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Beautiful panoramic view of Lens and the surrounding area. Be careful when you climb onto the spoil heap during a storm, it's a real hair-raiser!
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Also known as "terril de la cuisse maraine" (the slag heap of the thigh maraine), a slag heap where nature has reclaimed its rights, dotted with small paths.
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it's written like that on the sign
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legend of the fairies who dance around the dolmen
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This site is part of the unknown treasures of the Land of Artois. The various megalithic sites are good for a beautiful walk, among mysteries and legends, history and extraordinary landscapes
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Don't miss the Loos-en-Gohelle slag heap, an astonishing and unusual spectacle. There are five hills made of coal waste, and this one is the highest, reaching 146 meters, the highest in Europe! Hike to the top and admire the views. You can see how nature has transformed the hills with plants, animals and even grapes. Take the opportunity to learn about this UNESCO World Heritage site and discover its rich history and culture at Base 11/19.
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A must see if you are in the area.
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More than 4000 years old, is the sole survivor of a gigantic megalithic complex, unfortunately dismantled in the 19th century. Originally, this set was made up of: – 4 dolmens, arranged in a diamond shape, linked together by avenues of raised stones and thus forming a sacred enclosure; – 2 galgals (the 1st 26 m long by 1.60 m high, the 2nd 50 m long by 2 m high) which delimited the whole to the North-West. https://www.fresnicourtledolmen.fr/le-dolmen/
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The natural monuments in this region are largely a result of its industrial past, with many being rehabilitated coal slag heaps, known as *terrils*. These sites have been transformed into unique ecological areas and recreational spaces, offering a blend of historical context, distinctive biodiversity, and outdoor activities. They represent a successful transition from heavy industry to green tourism.
Yes, you can visit the Passage dolmen: The Fairy Table. This more than 4000-year-old dolmen is the sole survivor of a large megalithic complex, offering a fascinating glimpse into ancient history and mysteries.
Many of the natural monuments offer expansive views. For instance, the Loos-en-Gohelle slag heap, the highest in Europe at 146 meters, provides beautiful panoramic views of Lens and the surrounding area. Similarly, the Belvedere at Olhain Park, the highest point in Pas-de-Calais, offers sweeping vistas of the Artois hills, the historical mining basin, and the distant Flanders mountains.
Absolutely. The rehabilitated slag heaps, like the Terril de Fouqureuil, are dotted with small paths perfect for hiking. You can also find numerous trails around the region, including those suitable for Nordic walking or mountain biking near the picturesque Caucourt Ford and Watermill. For more detailed routes, explore the Running Trails around Nœux-Les-Mines guide.
The region offers diverse outdoor activities. The Spoil heaps 74 and 74a are known as a great playground for mountain bikers, featuring challenging climbs and single trails. The Loisinord leisure center, located on the Terrils of Nœux-les-Mines, provides activities like skiing on Europe's largest artificial snow track, mini-golf, and canoe/kayak rentals at its nautical base. You can also find various cycling routes in the area, such as those in the MTB Trails around Nœux-Les-Mines and Road Cycling Routes around Nœux-Les-Mines guides.
Yes, Olhain Park, with its Belvedere, offers family-friendly activities such as a slide and a zip line, in addition to scenic views. The Loisinord leisure center also provides a range of activities suitable for families, including mini-golf and water sports.
The rehabilitated terrils and natural sites can be enjoyed year-round. Spring and autumn offer pleasant temperatures for hiking and exploring the unique flora. Summer is ideal for water activities at Loisinord, while the artificial ski slope operates year-round, making winter visits also an option for unique experiences.
Yes, this is a key feature of the region's natural monuments. Sites like the Loos-en-Gohelle slag heap clearly demonstrate how nature has transformed these hills with plants, animals, and even grapes. The unique soil conditions of the terrils foster distinctive biodiversity, attracting rare species.
Yes, from Terril 36 of Nœux-les-Mines, you can get a beautiful view of the artificial ski slope at Loisinord, providing a unique perspective on this innovative recreational site.
Due to the unique heat of their soil, the rehabilitated terrils foster distinctive biodiversity, attracting rare species of flora and fauna. While specific species vary, these 'pockets of nature' within the former industrial landscape provide habitats for various birds, insects, and plant life that have adapted to these environments.
The Caucourt Ford and Watermill, described as a 'magnificent fording' with a charming watermill, offers a picturesque and tranquil setting. It's ideal for those seeking peaceful outdoor experiences, hiking, Nordic walking, or mountain biking amidst natural beauty and rustic appeal.


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