Aim of the thesis is to describe effective determinants of scarp evolution in cometary environment. Scarp being analyzed is located in the Ash region, on the surface of 67P/Churyumov–Gerasimenko comet. Variables, which has been analyzed as important to scarp behaviour in time are: material parameters, organic admixtures of H2O ice, and illumination conditions. During the experimental and calculation work, following conclusions has been drawn: amount of organic admixtures in ice is not determinatory to the scarp built by this ice; there is a strong corelation between the illumination and sublimative erosion of the surface; cometary landscape is prone to evolving into the vertical heterogeneity (terrain roughness).