Mount Aso, Kyushu, Japan
Mount Aso is an active volcano in the center of Kyushu Japan. Its ancient caldera ranks among the world’s largest, with a diameter of up to 25 kilometers and a circumference of over 100 kilometers. In the center of the caldera stand the mountain’s active volcanic peaks, including Mount Nakadake, whose spectacular crater is easily accessible to tourists by toll road or ropeway.
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