Lena River Delta
Lena River Delta – is rather a rare case of a huge alluvial deltaic cone formation (the area is up to 28,500 km2). The top of the estuary is a head of the forest left arm – Burlukskaya Protoka. 70 km down the river close to the cliffy cape Krest-Tumsa and Stolb Island, there is a main point of the Lena’s division into large arms (protokas) – Olenyokskaya, Tumatskaya, Trofimovskaya, and Bykovskaya. L.R.D. presents a product of sea gulfs filling up with river drift and a result of advancement estuaries formation by separate river arms. In a current day there are remains of the bedrock relief left (Stolb Island, America-Khaya Mountain), as well as the areas of older seashore lowland. The hydrographic network of the delta includes 6,089 stream flows of the total length of 14,626 km and 58,728 lakes with the total area of 3,196 km2; in the delta there are 1,600 islands.