Monday, September 14, 2015
Mt. Aso is the largest active caldera in Japan and is a popular place for visitors to the prefecture. More than ten volcanic cones are located in the 25km diameter caldera.
The volcanic plume is estimated to have risen 2,000m into the sky after the eruption. A Level 3 warning (Do not approach the volcano) has been issued by the Japan Meteorological Agency.
Today's event follows the equally unpredicted and deadly eruption of Mt. Ontake in September last year.
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