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Slate Museum Haut-Martelange
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The Slate Museum in Haut-Martelange is a unique open-air museum that brings the history of the slate industry in the Ardennes to life. On the 8-hectare site of a former slate quarry that was in operation until 1986, visitors can trace the entire production process from underground extraction to the finished roofing slate. A highlight is the descent into the underground extraction sites at a depth of 42 meters, where the harsh working conditions of the 'Leekëpperten' (slate workers) become tangible. Above ground, craftsmen demonstrate the traditional techniques of splitting and cutting the slate blocks. The historic buildings, including workshops, a forge, and even a small power plant, have been preserved and provide a comprehensive insight into the life and work of the people, which was shaped for centuries by this 'blue gold'. The museum is an important industrial monument and a fascinating destination on the Belgian border.
- Location: Luxembourg
- Top sights: Musée de l'Ardoise · Musée de la Haute-Sûre · Musée 385th bomb group
- Nearby: Esch-sur-Sûre (16 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 0 | 1 | 4 | 8 | 12 | 16 | 18 | 17 | 13 | 9 | 5 | 1 |
| Rain mm | 84 | 73 | 69 | 52 | 76 | 76 | 76 | 85 | 60 | 72 | 79 | 93 |
📋 Practical info
Visiting
This expansive open-air museum can be fully explored both indoors and outdoors, allowing visitors to discover the underground chambers and workshops.
Typical hours
The site typically welcomes guests during the daytime from spring to autumn, though the fascinating underground tours are usually scheduled at specific times.
Photography
Photography is highly recommended to capture the industrial atmosphere and subterranean galleries, but a tripod or good low-light camera helps underground.
Time needed
Plan to spend at least two to three hours here to fully appreciate the extensive grounds, the historical exhibitions, and the guided subterranean tour.
Combine with
Combine your visit with a hike through the surrounding Upper Sûre Nature Park or explore nearby easy on the eye villages scattered throughout the Ardennes region.
Getting there
The museum is best reached by car via the national road network towards Martelange, with ample parking usually available right at the main entrance area.
Insider tip
Wear sturdy, comfortable walking shoes and bring a warm jacket, as the underground slate extraction chambers remain quite cool even during the summer months.
Geography
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights in the town Slate Museum Haut-Martelange (8)
Musée de la Haute-Sûre🏛 museum
A regional museum in Haut-Martelange showcasing local culture and nature.
🌐 portail.wallonie.museum🕒 "only after registration"
Sights nearby
Frequently asked questions
What can you see at the Martelange Slate Museum?
You can experience the old workshops, the mine, and the craftsmanship of slate processing.
Can you go underground in Martelange?
Yes, there are guided tours into the Rosset mine, which goes down to a depth of 42 meters.
Are there demonstrations of slate splitting?
Yes, craftsmen regularly demonstrate how slate is traditionally split and shaped.
How long does a visit to the Slate Museum take?
You should plan for about 2 to 3 hours to see the entire site, including the guided tour.
Is the museum open year-round?
There are seasonal opening hours, typically from April to October. Check the website beforehand.
Slate Museum Haut-Martelange: where is it located?
Slate Museum Haut-Martelange is located in Luxembourg.
Slate Museum Haut-Martelange: what is there to see?
Highlights include Musée de l'Ardoise, Musée de la Haute-Sûre, Musée 385th bomb group.
Slate Museum Haut-Martelange: when is the best time to visit?
The most pleasant time to visit is Jun, Aug.
Slate Museum Haut-Martelange: why is it worth visiting?
The Slate Museum in Haut-Martelange is a unique open-air museum that brings the history of the slate industry in the Ardennes to life.
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