Yana–Indigirka Lowland – located in Northeastern Siberia, in Yakutia. The lowland extends 600 km along the coastlines of the Laptev Sea and the East Siberian Sea (from the Yana River Delta in the west to the Indigirka River Delta in the east). The height of single ridges and coniform hills is up to 300 m. The lowland is formed of alluvial rock and ground ice. There are numerous thermokarst lakes and swamps. Moss and lichen and low-bush tundra in the north and larch woodland in the south are found in the area.