Ecological hazards of flooded areas of rivers choked with volcanic lavas in South Georgia

The article describes the blocking of river valleys caused by volcanic activity in the Southern georgia region. As a result of them, the origin of the volcanic relief and the flooded areas and lakes which are of great importance for the natural territorial development of South Georgia. Damped lakes do not represent a danger of breakthrough, but Their preservation in nature is under threat due to climatic, geomorphological and anthropogenic influences. For this, it is important to monitor and protect them. These works will protect the unique lakes of the region from ecological threats.