22 September 2022, Saxony, Annaberg-Buchholz: The "Markus-Röhling-Stolln" visitor mine in Frohnau. In a 20-month construction period, two old routes were connected to form a circular tour by driving a new 35-meter "roadway". On the tour, which is a good 800 meters long at a depth of 600 meters, visitors can get to know the mining epochs of the Ore Mountains in an impressive way. In the most important mine in the Annaberg mining district, silver and cobalt have been mined since the 16th century, as well as uranium ore from 1947 to 1952. Photo: Jan Woitas/dpa