ANAN, Tokushima Prefecture—Anan city officials announced on Jan. 19 that the oldest trace of “shinsha" (cinnabar) mining in Japan was found at the Wakasugiyama cinnabar mining site here.

Tokushima Prefecture, in the eastern part of Shikoku Island, is renowned as a heartland of traditional fermentation. It is especially famous for its indigo dyeing tradition which brought ...