Lungxa Uppland
Between the Lena and Vilyuy lies a broad lowland of forest, lakes and sandy ridges. Near Lake Nidili, the Khotugu-Ulakhan-Tukulan dunes run along the northeastern shore and extend for many kilometres. Such sands, known as tukulans, are a striking feature of the river basins of central Yakutia, where they stand amid a landscape otherwise dominated by taiga and water.