Mount, a volcanic mountain in Japan, in central Kyushu, noted for its vast caldera. 5223 feet (1593 meters).
Also called Asosan [ah-soh-sahn] /ˌɑ soʊˈsɑn/ Show IPA.
Also called: Asosan a group of five volcanic cones in Japan on central Kyushu, one of which, Naka-dake, has the largest crater in the world, between 16 km (10 miles) and 24 km (15 miles) in diameter. Highest cone: 1592 m (5223 ft)