Landslides in the Carpathian flysch have a peculiar susceptibility to activation. This is due to the geological structure of the flysch. This study addresses analysing the effects of a landslide, particularly in regards to the operation of a transportation route that runs through the Carpathian flysch. The studies include both field work and laboratory testing of basic geotechnical parameters. The field work comprises surveys made by a terrestrial laser scanner. The study also includes a number

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... of 2–D and 3–D numerical models. Subsequently, survey results and an analysis of the effects of landslide susceptibility and the behaviour of the road and terrain surface, due to the different loading conditions, are shown.