Mount Aso, located in Kumamoto Prefecture on Japan's Kyushu island, is one of the world's largest active volcanoes and Japan's most significant after Mount Fuji. The massive caldera formed through four catastrophic eruptions between 300,000 and 90,000 years ago, with the final Aso-4 eruption being so powerful that its volcanic ash blanketed all of Kyushu and reached as far as Yamaguchi Prefecture. The present-day volcano consists of five central peaks, with Mount Nakadake remaining continuously

Mount Aso volcano during eruption, releasing ash and steam, close view. Aso-Kuju National Park on Kyushu Island, Japan.

Mount Aso volcano: Stunning photos capture eruption in Japan

Japan's Mount Aso erupts sending smoke miles high

A 3-day Road Trip Itinerary to the Beautiful Mount Aso -