Abstract: The study shows particular features of geocryological condition formation in transverse sections of river valleys with bottom land taliks. The influence of fine-grained mineral biogenic sediments accumulation on drainage and overall landscape appearance formation is assessed. The research contains results of geocryological research on key areas of modern ancient (pleistocene) cryogenic processes development which determine the development of icy permafrost sediments, respectively, pingos and large re-wedge ice. We determined features and some patterns of soil-plant complex development along with the deterioration of ecogeocryological conditions, fall of temperature and seasonal thawing of soil in and outside the area affected by taliks.