The Alte Thiele and Flache Thiele mining area was located south of Galgenhöhe hill (“Gallows Hill”), Buchholz’s place of execution. Mining in this area initially focused on placer tin. Evidence of this can be found in the form of tin placer heaps in Buchholz’s urban forests. By the 16th century, tin ore veins were also being mined. The mines were named after the main shareholders in the pit, the Thiele family. Tin ore mining, which had taken place intermittently throughout this period, ceased in 1801.