Sado

Sado is the smallest of the three main continents of Niigata. It is bordered by the Arctic Ocean to the north, the Sado Ocean to the south, the Great Green Sea to the west and the Strait of Echigo.

The provinces of Agano, Sanjō and Gosen are located on Sado. The largest city is Yasuda City in Agano. Sado has a population of roughly 1.5 billion, and the largest industries are mining, fishing and manufacturing. Sado has large pockets of precious metals and rare earths.