the case, the village is named after the river arm (the Russkoye Ustye) on which it was located. Several flat islands are formed by the channels of the delta. Listed from the east to the west, the major ones are: Usun-Ary lies longitudinally along the coast east of the Srednyaya mouth. It is and wide. Uparovskiy Island lies completely detached offshore from the Srednyaya mouth. It is about long and 1 km wide. Ploskiy Island is the farthest offshore of a cluster of islands at the Srednyaya mouth. It is C-shaped and about 3 km long. Bolshoy Fedorovskiy lies between the two mouths of the Indigirka. It is 6 km long and has a maximum width of 4 km. Vkodnoy and Oleniy islands lie right at the Prot. Russko Ust'inskaya mouth . Both are of similar size, about 4 km in length. Krestovyy Island lies quiet isolated directly to the south of the Lopatka Peninsula, offshore to the northwest of the main Indigirka mouths. It is 6 km long and 1.6 km wide. See also Cave lion cubs Boris and Sparta, found on the banks of the Tirekhtyakh tributary List of rivers of Russia Yana-Oymyakon Highlands§Hydrography References External links Location of islands William Barr, Baron Eduard Von Toll's Last Expedition. Arctic, Sept 1980. Rivers of the Sakha Republic East Siberian Lowland