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Kuttara Volcano | John Seach
Hokkaido, Japan
42.50 N, 141.18 E
summit elevation 581 m
Stratovolcano
Kuttara Volcano is located in southern Hokkaido, Japan. The volcano consists of a somma, pyroclastic flow plateau, a lava dome, and an explosion crater. The somma has a 3 km wide caldera at the center.
Jigokudani (Hell valley) is a 450 m diameter crater with red walls. Noboribetsu has 11 types of springs and is located at the crater. Oyunuma is a sulphurous pond located in the valley.
Intense thermal activity includes fumaroles and geysers at Jigoku-dani and Noboribetsu Spa.
Caldera forming eruption (40 ka)
A caldera forming eruption occurred 40,000 years ago. The eruption ejected large quantities of pumice and ash.
Further Reading
Chikita, K., Ochiai, Y., Oyagi, H. and Sakata, Y., 2019. Geothermal linkage between a hydrothermal pond and a deep lake: Kuttara Volcano, Japan. Hydrology, 6(1), p.4.
Yamagata, K., 1994. Tephrochronological study on the Shikotsu and Kuttara volcanoes in southwestern Hokkaido, Japan. Journal of Geography (Chigaku Zasshi), 103(3), pp.268-285.
Kuttara Volcano Eruptions
1820, 8050 BC