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Hiuchi
"Hiuchi volcano lies in Nikko National Park and erupted the 8 cu km Hiuchigatake-Nanairi tephra and pyroclastic flow deposit about 170,00-160,000 years ago. Two lava domes at the southern end of the summit of Hiuchi stratovolcano overlook Ozenuma lake, a popular hiking destination in the national park. The southern of the two domes, Akanagure, produced a series of viscous lava flows about 3500 years ago that extend to the southern and western flanks the volcano. The northern dome, Mi-ike, was the source of a tephra layer correlated with a report of historical activity in 1544 (Hayakawa, 1994b)."  -Smithsonian Volcano Archive
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