Southernmost of the main islands of Japan, separated from Shikoku and Honshu by Bungo Channel and Suo Bay, but connected to Honshu by bridge and rail tunnel area 42,150 sq km/16,270 sq mi, including about 370 small islands capital Nagasaki towns Fukuoka, Kumamoto, Kagoshima physical mountainous, volcanic, with subtropical climate features the active volcano Aso-take (1,592 m/5,225 ft) with the world's largest crater products coal, gold, silver, iron, tin, rice, tea, timber population (1986) 13,295,000.