The province has the shape of an oblique rectangle inclined in a northeast-to-southwest direction. To the west, the province borders an extended forest and mountain region. To the east, it is adjacent to the Gulf of Bắc Bộ. It features a meandering coastline, estuaries and tidal flats and more than 2,000 large and small islands. Exactly 1,030 of these have been named. Quảng Ninh's coordinates are longitude 106º25′ to 108º25′ east and latitude 20º40′ to 21º40′ north. Its width from east to west is 195 km (at the widest part).