Nii

Nii lies on the northern coast of Iyo, between the Seto Inland Sea and the steep mountains of Shikoku. Inland, the Besshi copper mine opened in 1691 under the Sumitomo family, after a promising vein was found high in the Akaishi mountains. Copper from the mine supported Japan's overseas trade through Nagasaki, while the coast near Niihama provided a route for carrying the mountain's output across the Inland Sea.