The International Disaster Risk Reduction Day, October 13, was celebrated by the Manager of Djerdap Geopark, PE “Djerdap National Park” with a lecture on Natural hazards in the area of Djerdap Geopark, which was attended by representatives of PUK “Donji Milanovac”, Culture Center Donji Milanovac, TOO Majdanpek, Majdanpek Technical School, Department in Donji Milanovac, “Agrar Poreč” Donji Milanovac and others. The executive director Nenad Radaković, MSc forestry welcomed those present on behalf of the PE “Djerdap National Park”, and the lecture was held by Dušan Mijović, PhD geologist. During the lecture, the guests learned that in the Geopark area there are pronounced processes of soil instability that threaten geoheritage sites, while other hazards caused by the Earth’s internal forces have a very low probability of occurrence.