Best natural monuments around Sallaumines include landscapes profoundly shaped by its mining history. The region features re-naturalized slag heaps, known as terrils, which have transformed into unique ecological and recreational spaces. These sites offer significant natural interest and opportunities for outdoor activities. Many of these former industrial areas now provide diverse ecosystems and panoramic views.
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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The Battle of Vimy Ridge (April 9-12, 1917) This is one of the most famous battles for Canadians during the First World War. Vimy Ridge was a strategic position fortified by the Germans since 1914. In April 1917, the four Canadian divisions, united for the first time, attacked to retake it. - 💥 The bombardments that created the shell holes Before the assault For several weeks, Allied artillery (mainly British and Canadian) bombarded the German positions to weaken the defenses, cut the barbed wire, and destroy the enemy trenches. It is estimated that more than a million shells were fired in preparation for the attack. During the attack On April 9, 1917, the Canadian infantry advanced under a creeping barrage, that is, artillery fire that advanced just ahead of the soldiers to protect their advance. Result These intense bombardments literally riddled the ridge with craters. Each shell exploding in the ground dug a hole of varying width (depending on the caliber, often between 1 and 5 meters in diameter). 🏞 After the War Why are the shell holes still there? After 1918, it was decided to preserve certain areas as they were, particularly around the future memorial, to demonstrate the scale of the fighting. The land was therefore not leveled or cultivated, unlike other areas of the front, which reverted to agricultural fields. A Landscape for Remembrance The shell craters, reconstructed trenches, and replanted trees (each tree represents a killed Canadian soldier) create a living memorial park, keeping the scars of the conflict visible for future generations.
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Vimy Foundation Centennial Park Vimy Foundation Centennial Park offers visitors a unique and reflective space to reflect on the horrors that occurred on these lands during the Great War, contrasting with the solemnity and grace of the adjacent Canadian National Memorial. The main attraction of the four-acre park is 100 Vimy Oak trees, grown from acorns collected on the battlefield in 1917, along with the Borden bugle, the Centennial Flagpole, and 360-degree memorial views of the First World War battlefield. One hundred years after the war, the Park ensures that we never forget the sacrifice of all those who served our country. The Vimy Foundation The Vimy Foundation is a national charitable organization whose mission is to preserve and promote Canada's legacy of the First World War, symbolized by the victory at Vimy Ridge in April 1917. This momentous event is widely considered a pivotal moment in our history, Canada's first steps onto the world stage. Through youth education programs, awareness campaigns, and legacy projects, including the new Vimy Visitor and Education Centre and Centennial Park, the Vimy Foundation provides Canadians with opportunities to learn how the First World War transformed our nation. Vimy Oaks The park's oak trees are directly descended from acorns collected on the Vimy Ridge battlefield by a Canadian soldier, Lieutenant Leslie Miller of Scarborough, Ontario, and later planted on his farm in Canada, which he named The Vimy Oaks. A number of these majestic oaks are still alive today in Canada, while virtually none of the Vimy Ridge oaks survived the First World War. The Vimy Oaks Legacy Society, a Canadian non-profit volunteer association, was created to repatriate young Vimy oaks descended from acorns collected after the battle. Volunteers landscaped and planted these repatriated Vimy oaks, which now stand guard in this park adjacent to the Canadian National Vimy Memorial.
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Be careful on a narrow path, in some places a slippery plastic coating covers part of the path
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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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Beautiful slag heap accessible to the most athletic 3 switchbacks without a plateau to reach the top and admire the beautiful view of the Harnesien and the Carvinois and other summits of the slag heaps that surround it.
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Great playground for mountain bikers! Beautiful climbs and single around the slag heaps!
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Great place, nice climb and a breathtaking view once at the top !!
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The natural monuments around Sallaumines are largely shaped by the region's mining history. They primarily consist of terrils (slag heaps), which are former mining waste dumps that have been re-naturalized, and rehabilitated industrial sites transformed into unique ecological and recreational spaces. These sites offer a blend of industrial heritage and natural beauty.
The terrils are artificial mountains that have been reclaimed by nature, developing diverse ecosystems. They offer unique soil and microclimates, supporting various flora and fauna. Visitors can enjoy panoramic views from their summits, and many have become havens for biodiversity. Their significance as a cultural and evolving landscape is recognized by their UNESCO World Heritage status.
Yes, several terrils offer excellent viewpoints. The Loos-en-Gohelle slag heap is notable as the highest in Europe, reaching 146 meters, and provides extensive panoramic views. Spoil heaps 74 and 74a also offer breathtaking views from their tops, and Terril Estevelles provides beautiful vistas of the surrounding area.
The re-naturalized terrils and parks, like the Parc de la Glissoire, have become important habitats for diverse wildlife. The Parc de la Glissoire, for instance, supports numerous bird species, including 31 aquatic types, due to its wooded areas and lakes. The unique ecosystems of the terrils also attract various flora and fauna, some of which were not present before their re-naturalization.
Absolutely. The Vimy Foundation Centennial Park is listed as family-friendly, offering a reflective space with historical significance. The Parc de la Glissoire, though not a highlight in the guide data, is a significant recreational area with lakes, trails, and a sandy beach in summer, making it ideal for family outings and diverse outdoor activities.
The region uniquely blends natural reclamation with significant historical sites. The Vimy Ridge Shell Craters are a poignant natural monument, preserving the landscape scarred by intense bombardments during the First World War. Nearby, the Vimy Foundation Centennial Park also offers a reflective space connected to this history.
The natural monuments and surrounding areas offer a variety of outdoor activities. You can find numerous hiking trails, including moderate options like the 'Galance Marsh – Étang du Brochet loop from Sallaumines'. For cycling enthusiasts, there are routes like the 'Mont Hernu cycle path – Glissoire Park loop'. Mountain biking is also popular, especially around Spoil heaps 74 and 74a, which are described as a 'great playground for mountain bikers'. You can explore more routes on the hiking guide, cycling guide, and gravel biking guide for Sallaumines.
Yes, there are several trails that allow you to explore these unique landscapes. For a moderate hike, consider the 'Galance Marsh – Étang du Brochet loop from Sallaumines' (12.6 km) or the 'Étang du Brochet – Galance Marsh loop from Lens' (9.6 km). An easier option is the 'Lake – Picnic tables loop from Lens' (5.1 km). You can find more details and routes in the hiking guide for Sallaumines.
The terrils and re-naturalized parks are generally accessible year-round. Spring and autumn offer pleasant temperatures for hiking and cycling, with vibrant foliage changes. Summer is ideal for enjoying activities at places like Parc de la Glissoire, which features a sandy beach and water activities. Even winter can offer unique, quiet walks, though some paths might be muddy.
Visitors particularly enjoy the unique blend of industrial heritage and natural beauty. The panoramic views from the summits of the terrils, such as the Loos-en-Gohelle slag heap, are highly praised. The transformation of these former industrial sites into vibrant green spaces, offering diverse ecosystems and recreational opportunities, is also a significant draw. Many appreciate the chance to connect with both nature and history.
Yes, the Parc de la Glissoire, located near Sallaumines, features six lakes covering 12 hectares that are open for fishing. This park is a great example of a rehabilitated mining wasteland turned into a significant recreational area.
Many of the terrils and rehabilitated parks, like the Parc de la Glissoire, are recognized for their ecological value. They have become havens for biodiversity, supporting various flora and fauna that thrive in their unique conditions. The transformation of these industrial sites into vibrant ecosystems is a testament to nature's resilience and regional conservation efforts. You can learn more about the fauna and flora of the terrils on the Pas-de-Calais tourism website.


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