The “Kamšt” is a water-powered pumping device used to pump cave water. Only one “Kamšt” among many is preserved today in Idrija, dating back to 1790. Its special feature is a large water drive wheel that has a 13.6m diameter and takes 13 sec to make one full circle. At the same time, approximately 300 litres of pit water were used at a depth of 283m. Experience the mightiness of the largest wooden drive wheel in Europe!