In the research work we analyse construction material landfills the wider area of Štefanja Gora. We have described the method of processing photographs of cyclic aerial photography of Slovenia. With photogrammetric methods we have produced orthophotos and digital elevation models. We have used them for discovering construction material landfills. In one case, we have discovered the area of a permanent landfill. With an unmanned aerial vehicle, we have captured terrain data in two time periods. We have used photogrammetry methods to process captured terrain data and produce point cloud. We have used it to make a digital elevation model, that was used for surface change analyses. Based on two digital elevation models in two time periods, we have created a map with the changes and calculated volumes of the filled construction material.