Best natural monuments near Wizernes are found in the Pas-de-Calais department, a region characterized by its diverse natural landscapes. The area is situated close to the Marais Audomarois, a significant wetland system. Visitors can explore a variety of natural features, including remnants of peat cutting and protected natural areas. This region offers opportunities to experience preserved ecosystems and scenic walking routes.
Last updated: July 3, 2026
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It is far from imagining that here, in the 18th century and until the first half of the 20th century, human activity, linked to peat extraction, was in full swing. And yet these bodies of water bear witness to this exploitation in the past. The arrival of coal put an end to this activity and nature has now reclaimed its rights. Without human intervention, these plains would naturally fill up and make way for a reed bed and then for a peat basin.
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Nice, here you can compare the photo with the current situation. 13th century: stone sculptor; 1600: moving with the pole (flat bottom/punter) 1700: dredging with a dredging net 1850: drainage mill 1900: fishing with bundle of branches 1920: harrowing and rolling
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The Réservé Naturelle Nationale des Étangs du Romelaëre is a beautiful nature reserve located in Clairmarais, Saint-Omer and Nieurlet. This reserve, which covers approximately 108 hectares, is a remnant of an old peat cutting from the 19th century. The area consists of ponds, canals, bridges and chain pits, and offers a rich diversity of flora and fauna.
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Magnificent lake in the middle of the forest, ideal for starting a walk around the lake or a hike through the forest
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Nice descent a bit technical For novices but possible at low speed
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The region around Wizernes offers a diverse landscape, including significant wetlands, lakes, forests, and ravines. You can explore areas like the Romelaëre Nature Reserve Circuit, which features ponds, canals, and reedbeds, or tranquil spots like Harchelle Lake nestled within a forest. The Pihem Ravine offers a more rugged natural experience.
Yes, several natural monuments are suitable for families. The Romelaëre Nature Reserve Circuit is excellent for all ages, with easy paths and abundant wildlife. Harchelle Lake provides a peaceful setting for family walks, and the Saint-Omer Public Garden offers a mix of landscaped areas and an arboretum, perfect for a leisurely family outing.
The Romelaëre Nature Reserve is a haven for biodiversity. It's an exceptional spot for birdwatching, with around 200 to 240 notable bird species, including migratory birds like reed warblers, crested grebes, and kingfishers. You might also spot amphibians, various fish, and a rich variety of insects, including numerous species of butterflies and dragonflies. Observatories are available for undisturbed viewing.
The natural monuments can be enjoyed throughout the year, but spring and summer are particularly rewarding for wildlife observation and pleasant walking conditions. During these seasons, the flora is vibrant, and many bird species are active. The beauty of the Romelaëre Ponds is especially enhanced when water lilies are in bloom.
Absolutely. The region offers a variety of hiking trails. For instance, you can find routes around the Romelaëre Nature Reserve. For more extensive options, explore the hiking guide for Wizernes, which includes trails like the 'Suspension bridge over the Aa' loop or routes around Mount d'Helfaut.
Yes, the trails cater to various fitness levels. You can find easy walks, such as parts of the Romelaëre Nature Reserve Circuit, which includes a 2 km route adapted for people with reduced mobility. There are also moderate and difficult routes, like the 'Suspension bridge over the Aa – Le Moulin Pidoux loop' mentioned in the Wizernes hiking guide, offering more challenging terrain.
Yes, the area provides opportunities for both gravel biking and running. You can find various routes, such as the 'Greenway along the Aa' loops for gravel biking, detailed in the gravel biking guide for Wizernes. For runners, there are trails like the 'Mount d'Helfaut – The Helfaut-Wizernes Dome loop' available in the running trails guide for Wizernes.
Yes, the Romelaëre Nature Reserve Circuit in Clairmarais offers three accessible paths, including a 2 km route specifically adapted for people with reduced mobility, ensuring a more inclusive experience for visitors.
Many natural areas around Wizernes have historical roots. The Romelaëre Nature Reserve, for example, is a remnant of 19th-century peat cutting, which shaped its unique landscape of ponds and canals. The Saint-Omer Public Garden was created in 1893 on the site of old city fortifications, blending natural beauty with historical architecture. The highlight '14 centuries of hard work' also illustrates the long history of human interaction with the local waterways and landscape.
The Grange Nature in Clairmarais serves as a visitor center for the Romelaëre Ponds Nature Reserve. It offers information, an exhibition space, and guided tours to help you make the most of your visit. You can find more details on the official tourism website: tourisme-saintomer.com.
Yes, several natural monuments offer scenic viewpoints. The Romelaëre Nature Reserve Circuit provides picturesque views of its ponds and diverse habitats, especially from designated observatories. Harchelle Lake also offers tranquil viewpoints over the water and surrounding forest. Additionally, the broader region, including the Monts d'Helfaut, may offer elevated perspectives of the landscape.
Visitors particularly appreciate the peaceful and immersive natural experience. The Romelaëre Nature Reserve is highly praised for its rich biodiversity and excellent birdwatching opportunities. The tranquil setting of Harchelle Lake and the diverse landscape styles of the Saint-Omer Public Garden are also frequently highlighted by the komoot community.


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