Specific ecological-geological systems (EGS), which consists of abiotic and biotic components, are formed on landfill soil bodies. In Russia, the number of such EGS, most of which cause accumulated environmental damage, is quite large. However, the ecological-geological features of such systems on solid municipal waste soil bodies almost have not been studied. This article considers the general ecological-geological features of such soil bodies. It shows that the EGS of landfill soil bodies are specific formations for which their lithotopes play a decisive role, and those lithotopes are composed of municipal waste soils that are rich in organic components. This, in turn, influences on the composition and properties of technogenic soils (technogenic edaphotopes) formed on those formations and of technogenic microbiо-, phyto-, and zoocenoses.