This beautiful cover came from Czech Republic and features a miniature sheet issued in 2021, celabrating the
Erzgebirge/Krušnohoří Mining Region. The Ore Mountain Mining Region (officially Erzgebirge/Krušnohoří Mining Region; German: Montanregion Erzgebirge, Czech: Montanregion Krušné hory) is an industrial heritage landscape, over 800 years old, in the border region of the Ore Mountains between the German state of Saxony and North Bohemia in the Czech Republic. It is characterised by a plethora of historic, largely original, monuments to technology, as well as numerous individual monuments and collections related to the historic mining industry of the region. On 6 July 2019, the
Erzgebirge/Krušnohoří Mining Region was inscribed as a UNESCO World Heritage Site, because of its exceptional testimony to the advancement of mining technology over the past 800 years.
