On a tour of about 3 km you go through the main gallery of the Walert over into the pit Langengrund. There, our historian will show and explain to you rooms and galleries that are normally inaccessible to the public.
Before the Walert and Langengrund mine were closed in the 1960s, they had developed a network of galleries on an area of 80 hectares. Our guide shows you, among other things, the place where Jean-Pierre Bausch died in a work accident and the last mine car which left the last Lorraine mine (F). You will also see an old substation and an underground compressor room of the HADIR-Langengrund mine where everything is still as it was left in the 1960s.