The Sado gold mine (佐渡金山, Sado Kinzan) is a generic term for gold and silver mines which were once located the island of Sado in Niigata Prefecture, Japan. Among these mines, the Aikawa Gold and Silver Mine (相川金銀山, Aikawa kinginzan) was the largest and was in operation until the modern era. The Sado Gold and Silver Mine was inscribed on Japan's World Heritage Tentative List under the title "The Sado Complex of Heritage Mines, Primarily Gold Mines" in 2010. From Wikipedia
