Dagestan Nature Reserve (Russian: Дагестанский заповедник) (also Dagestansky) is a Russian 'zapovednik' (strict nature reserve) protects an area of sand dunes and ridges on the northwest coast of the Caspian Sea in the southeast of European Russia. The reserve, a wintering place for migratory birds, is the richest nature reserve in Russia in terms of the number of species - over 300 species have been recorded in the reserve, its buffer zones and subordinate reserves. The reserve is part of several "Important Bird and Biodiversity Areas" (IBAs). The Sarykum sand dune is the highest sand dune in Europe, at 262 m (860 ft). The reserve is situated in the Tarumovsky District of Dagestan.