How does micro-topography affect arthropod communities? The team led by Jabbar Moradi focused on different arthropods comprising moths, spiders, ground beetles, ants, orthopteroids, centipedes, millipedes, and woodlice. These were observed either in heterogeneous wavy or flattened plots of post-mining areas. The authors found 380 species in total, 15 of them belonging to threatened ones. The research showed the importance of micro-topographic heterogeneity for the biodiversity of arthropods. A greater biodiversity and conservation value was detected in plots with highly heterogeneous surfaces (wavy). The results postulate the importance of reducing or combining technical reclamation projects with natural restoration.