Best attractions and places to see in Réserve Naturelle Haard, Luxembourg's largest nature reserve, span 600 hectares across the communes of Dudelange, Kayl, and Rumelange. The area features a blend of natural beauty and historical industrial heritage, showcasing how nature has reclaimed former open-pit mining sites. Visitors can explore diverse landscapes, including semi-dry grasslands and unique geological formations, alongside remnants of the mining era. This ecological transformation has created distinct ecosystems and offers insights into the region's past.
Last updated: July 5, 2026
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Popular around Réserve Naturelle Haard
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An exciting relic from the days of ore mining. Spectacular with a fantastic view!
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The wagon was probably used to dispose of slag. There is a pile of slag on the slope directly in front of it. If you look closely, you can see a whole lot more of it further down.
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Magnificent hiking spot. The paths are passable even after the rain and the scenery is varied.
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In Dudelange, at the start and end point of the RedRock Mountainbike Trails Haard Red & Black, you can wash your mountain bike. The station is right next to the Barozzi Stadium, rue Reiteschopp, and works with the help of tokens. You can get the tokens for free at: Syndicat d'initiative et de Tourisme de Dudelange (17, rue du Commerce L-3450 Dudelange, T +352 26 52 26 20 | info@visitdudelange.lu)
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Réserve Naturelle Haard offers a diverse network of hiking trails, including the "Sentier nature et forêt Diddelenger Haard" and the "Transfrontalier Minette." You can explore routes like the Rock Garden Trail at Haard Nature Reserve, which offers challenging sections, or the Wooden Bridge on the Forest Trail, known for its flowy single trail experience. Many trails showcase the reserve's unique blend of natural beauty and industrial heritage. For more hiking options, see our guide to Easy hikes in Réserve Naturelle Haard.
Yes, Réserve Naturelle Haard provides several easy hiking options suitable for families. The didactic trail, with its 16 or 17 explanatory panels, offers two main loops starting in Dudelange and Rumelange, providing insights into the reserve's history and nature. Routes like the Forest Trail in Dudelange and the Slag Rock Formations loop are generally considered easy. You can find more details in our guide on Easy hikes in Réserve Naturelle Haard.
The reserve is renowned for its unique natural features, particularly its reclaimed mining landscapes. You can observe how nature has re-colonized former open-pit mining sites, creating diverse ecosystems. Highlights include semi-dry grasslands, which are rich habitats for rare flora and fauna like orchids and butterflies, and visible layers of iron ore and limestone, remnants of the area's geological past. The reserve also boasts one of Europe's longest and most impressive open-pit mine faces.
Réserve Naturelle Haard is rich in industrial heritage. Visitors can find numerous mining vestiges throughout the reserve, such as former open-pit quarries, mine entrances, and slag heaps. A notable cultural site is the Old Slag Wagon, a large artifact used for disposing of slag, offering a tangible link to the area's mining operations. The didactic trail also provides extensive information on the region's patrimonial and cultural history.
The reserve's semi-dry grasslands and reclaimed mining landscapes have created rich habitats supporting diverse flora and fauna. You might spot rare species such as the Woodlark (Alouette lulu), various reptiles, and numerous butterflies. The area is also known for its orchids and other unique plant species that thrive in these transformed environments. Réserve Naturelle Haard is part of the European Natura 2000 network, highlighting its importance for biodiversity conservation.
Yes, several spots within Réserve Naturelle Haard offer excellent views. The Old Slag Wagon highlight, for instance, provides great views over the surrounding landscape. The dramatic geological formations, including the longest open-pit mine face, also serve as impressive natural viewpoints, showcasing the scale of the former mining operations and nature's reclamation.
Beyond hiking, Réserve Naturelle Haard is popular for cycling and mountain biking. The Rock Garden Trail at Haard Nature Reserve is a secret mega-spot for mountain bikers, offering challenging sections. There are also dedicated facilities like the Bike cleaning and inflating station in Dudelange, catering to cyclists. You can find various cycling routes in our guides for Road Cycling Routes and Cycling in Réserve Naturelle Haard.
The Réserve Naturelle Haard spans across the communes of Dudelange, Kayl, and Rumelange. The didactic trail, for example, has main loops starting in Dudelange and Rumelange, suggesting these towns serve as accessible entry points. Public transport options, such as buses or trains, typically connect to these communes, allowing visitors to reach the reserve's trailheads and attractions.
Visitors particularly enjoy the unique combination of natural beauty and industrial heritage. The challenging and flowy single trails, like those found near the Wooden Bridge on the Forest Trail, are highly appreciated by hikers and mountain bikers. The dramatic landscapes of reclaimed mining sites and the historical artifacts, such as the Old Slag Wagon, also leave a lasting impression, offering a glimpse into the region's past.
Yes, Réserve Naturelle Haard is very suitable for mountain biking. It's known for its challenging trails and is considered a 'secret mega-spot' for mountain bikers. Highlights like the Rock Garden Trail at Haard Nature Reserve offer exciting sections. Additionally, facilities like the Bike cleaning and inflating station in Dudelange cater specifically to mountain bikers using the RedRock Mountainbike Trails.
Absolutely. The reserve is dotted with remnants of its mining past. Besides the visible open-pit quarries and mine entrances, you can find the Old Slag Wagon, a significant man-made monument. Another notable anthropogenic element along the trails is a 'Humpen,' which were tip containers used on railway wagons to transport liquid slag, offering a direct connection to the industrial operations.


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