Until now, mass movement were considered only as destructive events for the economic activities of people. Detailed investigations made by the authors in the Polish Carpathians confirm that the mass movements play an essential role in shaping the geo- and biodiversity of the mountain s natural environs. Typical complexes of landslide relief elements form a mountainous landscape, and natural habitats related to them have a mosaic-type arrangement resulting from, and conditioned by, a strongly transformed bedrock and soils, as well as alterations in local water relations. No specialist studies were conducted on biocoenoses present in landslide areas, either. For the first time, research issues are presented, which refer to interdependencies between geo- and biodiversities in the Polish Carpathian regions where landslide areas occur. Within the landslide zones, 16 types of natural habitats were identified, and 4 zones amidst them were deemed a priority as included in the Annex I of the Habitats Directive. Numerous flora and fauna species, contained in the Annex II, were also documented, i.e. those that made a basis for the construction the European Ecological Network NATURA 2000. In the Carpathians, ecological niches occur that appear favourable for many endangered species as specified in the Polish Red Book of Plants, as well as for some other legally protected species in Poland. In the light of the research, the specificity of the natural habitats connected with some fixed topographic features of the landslide zones should be more extensively included into the European Ecological Network NATURA 2000.