on 19 October and 26 October and on the 30 November 2025 On a tour of about 3 km you go through the main gallery of the Walert over into the mine Langengrund. There our historian will show and explain to you rooms and galleries that are nomally inaccessible to the public. Before the Walert und Langengund mines 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 acci [...]