The Tomioka Silk Mill and Related Industrial Heritage
World Heritage Registration Promotion Office
Arafune Fuketsu (Cold storage)
Built from end of Meiji period to Taisho period, Arafune Fuketsu is a cold storage facility designed to preserve silkworm-eggs during the summer. With these facilities, silkworm-rearing could be achieved several times a year. Up to 1.1million strips of silkworm egg paper could be stored. It had the largest storage capacity in the nation. Via the Kozuke railway, silkworm eggs were carried into storage from all over Japan.