An analysis of the glassy components and mineral crystals contained in the deposits revealed characteristics of the “Aso-4,” the fourth caldera-forming eruption of Mount Aso that occurred ...

Travel through one of the largest calderas in the world at Mt. Aso in Kumamoto Pref. The caldera has fertile ground to sustain crops and livestock.

The 5.7-kilometer road climbs the slope of the Aso caldera rim in the west of the city. City government officials and local residents said a central government organ in the 1960s built the road ...