In the past there were many quarries in the vicinity of Kopriva and Brje. Among the the most important and largest was the quarry Kopriva (Kremenik). Operating mainly between 1920 and 1961 the quarry operated in 1900 already.
Although the quarry is protected as natural heritage of national importance it was in decay till 2014 and it contained illegal waste disposal site. We removed the illegal site in 2014 and started with geological researches to reopen the quarry and restarted the extraction of natural stone Kopriva. The quarry today is protected and preserved in accordance with Institute of the Republic of Slovenia for Nature Conservation. The south wall is maintained in its original condition.