The Japan Meteorological Agency volcano alert for Aso-san is currently at level 2 (do not approach crater). Check www.aso.ne.jp/~volcano/eng for the latest access information.
Welcome to Aso-san Area
Halfway between Kumamoto and Beppu lies the Aso-san (阿蘇山) volcanic caldera. It's among the world's largest (128km in circumference), so big that it's hard at first to understand its scale, and strikingly beautiful. Formed through a series of eruptions over the past 300,000 years, the current outer crater is about 90,000 years old and now accommodates towns, villages and train lines. Aso is the main town, but...