The phenomenon of a slow displacement of unconsolidated soil that is widely known by the term "creep" (from English reepcrawl) and "defluxion" (from German defluktion -drip, leak)

Since the 1940s on the territory of the Raifsky site of Bolshoy Volzhsko-Kamsky biospherical reserve (BVKBR) "UNESCO" the geomorphological conditions are subject to very detailed study. The study of modern geomorphological phenomena and processes on the territory of the Raifsky reserve was the main purpose of the work and geomorphological studies. Formation of the relief the territory under study is closely connected with the history of development of the valley of the Volga River. The territory of the reserve is very heterogeneous by morphology, genesis and history of the development of land forms. It is important to identify the interaction of the relief with the processes of territory development and settlement, i.e. geomorphological conditions are the pledge of successful development of the region.