
Phosphorite reservoir
In front of the west port is the site of a phosphorous ore mining business that operated until 1950. The brick building was the place where the ore was dried, the building on the left was the storage building. Phosphorite, which was purified and dried here, was carried by a trolley to the western port and was carried out to the outside of Hokidaitō. Phosphorite mining operations reached their height before the war, and the island's population was over 2000, it said. It has been designated as a National Historic Site.