One of Japan's largest active volcanoes, Aso-san, lies on this southernmost of the country's 4 main islands
Aso has a fairly large caldera (25 kilometres (16 miles) north-south and 
... Four large-scale eruptions (Aso 1  4) occurred during a period extending... [DOC] [TLE] 5 Remarkable Volcanoes in Japan  Touropia Travel Experts [PAR] Jul 29, 2015 ...