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ken (prefecture), central Honshu, Japan. It lies along the Sea of Japan and occupies an area of 1,642 square miles (4,252 square km). The coastal plain is indented by Toyama Bay. Watered by numerous rivers, including the Sho, Jinzu, and Kurobe, the prefecture is an important rice-producing area. The mountainous interior rises to 9,892 feet (3,015 m) in Mount Tate, which lies in Chubu-sangaku National Park. The mountains are a source of hydroelectric power and minerals that serve as a basis for the chemical, textile, machinery, pulp and paper, and steel industries.