Unzen

Active volcano on the Shimbara peninsula, Kyushu island, Japan, opposite the city of Kumamoto and 990 km/620 mi southwest of Tokyo. Its eruption in June 1991 led to the evacuation of 10,000 people. It is the main feature of Unzen-Amakusa National Park. The highest peak, Fugendake, is 1,359 m/4,459 ft high. There have been hot springs in the area since the 8th century and wild azaleas (miyamakirishima) grow locally.