Tukulans (Russian: Тукуланы; Yakut: Тукулаан, a term from Evenki origin) are relief forms shaped by aeolian processes of the Central Yakutian Lowland, Yakutia, Russian Federation. They are sand dunes of a characteristic type mainly found along the valley of the Lena River, in the area of the lower Vilyuy river.[1]
Tukulans come in the form of isolated dunes, but also as large sand-covered areas in certain spots of the plain, often among the trees of the taiga.[2] The largest of the dunes lies at 65°08′01.6″N 122°58′00.7″E / 65.133778°N 122.966861°E near the Linde River and reaches almost 40 kilometres (25 mi) in length.[3]