The Impact of Fossil Mammoth Bone Extraction on Permafrost and Hydrological Conditions in the Basin of the Middle Course of the Indigirka River

In the north of Yakutia, in recent times, the collection and extraction of fossil mammoth tusks has intensified. The article presents a geoecological assessment of the impact of tusk mining in yedoma deposits for thirty years on the territory of the basin of the lower reaches of the Semyuelyakh and Semyuelyakh-Sala rivers located on the Abyi lowland based on the interpretation of satellite images of different years. As a result of the research, it was revealed that, despite the seemingly extreme vulnerability of edoma high-ice deposits, they remain quite stable due to very severe climatic conditions. However, climate warming trends and the continuation of mining operations require more detailed studies, including monitoring ones.