JP: 十区七山/じっくななやま
A term applied to those areas which were allowed to use porcelain claystone from Izumiyama quarry in the Edo period.
Jikku areas are: Izumiyama, Nakadaru, Kamikohira, Odaru, Honkohira, Nakanohara, Shirakawa, Akaemachi, Hiekoba and Iwagochi.
Nanayama areas are: Hokao, Kuromuta, Obo, Nangawara, Hirose, Ichinose and Okawachi.
