The master craftsmen at work – continuing traditions:

Gujo Hachiman is a small castle town in the mountains of central Gifu, famous for its historic castle, clear water, and local traditions, including the art of indigo dyeing and carp-banner crafting.

“Kanzarashi” is part of the carp-banner-making process where artisans submerge the banners in the freezing river on the coldest days of the year, washing off the naturally made soybean paste applied before dyeing (The paste is used to make designs on the banners). The waters and temperature help tighten the banner material, fix the dye and bring out the bright colors in the designs.

Watching these masterpieces slowly come to life in the hands of skilled artisans in the freezing waters is a wonder you can spectate only twice a year in January and February.

For more info:
https://visitgifu.com/see-do/watanabe-somemono-dyehouse/
Official site:
http://www.gujozome.jp/english/