In the Kaff ore field in Zlatý Kopec or Goldenhöhe (Golden Hill) near Boží Dar, tin, iron, and to a lesser extent copper ore were mined as early as the first half of the 16th century. The mines were in operation up until the 1860s. Over an area of approximately 1,500 x 400 metres, there are countless authentic elements both above and below the surface which bear witness to past mining activity, including hundreds of sink-holes as well as crumbling mines and adits. The entire area of mountainous and forested terrain was untouched by later changes in the landscape, and has retained its original character as a mining landscape.