チュクチ半島
Big Diomede Island is located about southeast of Cape Dezhnev on the Chukchi Peninsula and is Russia's easternmost point. The coordinates are . The rocky tuya-type island has an area of about The International Date Line is about east of the island. The highest point of the island is at 65°46'24.64" N, 169°04'06.61" W where the elevation reaches .