ABSTRACT
Sakhalin area is characterized as one of the most problem in Russia. It connects with the amount of sliding phenomena expression. Understanding the reasons and mechanisms of landslides formation gives advantages in their increased activity forecast. It also helps in possible prevention of tragically accidents. Last year’s landslides activation was registered in 36 localities, i.e. 10 were urban and 26 were rural. Landslides in bykovsky mudstones formation are of particular interest as properties of such rock are not fully explored.
