Chechen Island is a coastal island on the western shore of the Caspian Sea. It is located 20 km east of Krainovka right off the headland on the northern tip of the Agrakhan Peninsula. This island belongs to the Republic of Dagestan, a federal subject of the Russian Federation.
The island has a length of 15 kilometres and a maximum width of 10 km. The sea around Chechen Island usually freezes between January and March. Adjacent islands include Lopatin Island, Bazar, Prygunki, Pichuzhonok and Yaichnyy Island and are collectively known as the 'Chechen Archipelago'.
Wikipedia https://en.wikipedia.org/wiki/Chechen'_Island
Coordinates 43°58'12.577" N 47°42'47.113" E