Between the end of the 18th century and the mid-1980s, Martelange was an important site for the extraction of slate, especially for the production of roofing shingles. After the end of this period, people from the area and beyond worked to preserve this industrial heritage. The “Frënn vun der Lee asbl“, together with the state and the municipality, has built up a slate museum since the early 1990s and has ensured that the slate mine can still be visited. On site, one discovers everything that has to do with slate. In addition, the site offers a number of workshops, especially for children. By the way, a new gallery will open to visitors in August 2021. The season starts on 1 April.    

Information for parents:

  • Address: Maison 3, L-8823 Haut-Martelange. Tel: +352 23 64 01 Web:
  • Sturdy shoes and a warm jacket are recommended, especially when going down into the mine, which is up to 15 metres below the surface. The temperature here is a constant 9 degrees Celsius all year round. 
  • Engraving and stenciling workshops are offered during the holidays.
  • There is also a special offer for birthday parties at the Slate Museum.
  • But you can also book a family tour and play detective with “Schuppi”. “Schuppi” is the mascot of the Slate Museum.