Honshu, Japan
36.17 N, 133.33 E
summit elevation 151 m
Shield volcano
Dogo-onsen Hot Spring is Japan's oldest visited spa said to have been opened about 3000 years ago. The volcano is located north of Matsue.
Further Reading
Nagasawa, H., 1973. Rare-earth distribution in alkali rocks from Oki-Dogo Island, Japan. Contributions to Mineralogy and Petrology, 39(4), pp.301-308.
300,000-800,000 years ago