In the former Saga Clan’s porcelain production area centering on Hizen Arita, through the three counties of Nishimatsuura, Kijima, and Fujitsu, there are three different names for the area: Uchiyama, Sotozan, and Ootozan, which are used to distinguish the limited supply of Senzan magnets. Uchiyama refers to the Sarayama area in Arita, the location of Izumiyama, and includes the following ten areas: Izumiyama, Kamikouhei, Nakataru, Otaru Honkouhei, Shirakawa, Akae-cho, Nakanohara, Milia-Koba, and Iwayagawa. (“History of the Arita Pottery Industry”)
