The Mariánská Štola, 532 metres long, was built between 1869 and 1870 and opened to the public in 1994. Visitors are introduced to the history of the adit and the work of the old miners in the unaltered form of the preserved brick and stone lining of the adit's ovoid profile, as well as a demonstration of the mine's workings.

Visitors can see the surface exhibitions, the Rimba adit and an exhibition called Memory of the Region.