Mining activities on the Bartholomaeberg

The ores at Bartholomaeberg – Kristberg are restricted to the transition zone of the Silvretta Crystalline to the overlying sediments of the Northern Calcareous Alps. The ores originate from old volcanoes which, 285 million years ago, spewed ignimbrites which are clouds of lava, that were rich in copper, barite, silver, gold, uranium, lead and iron.