"Volcán Yucamane lies at the south end of a group of three volcanoes; both it and Cerro Caliente to the north display evidence of postglacial lava flows, which overlie thick moraines. The andesitic Yucamane volcano has a youthful, well-preserved summit crater. Late-Pleistocene and Holocene eruptions have produced airfall deposits, pyroclastic flows and surges, and block-and-ash flows produced by growth and collapse of lava domes. The most recent plinian eruption took place from Yucamane about 3300 radiocarbon years ago. A single historical eruption of uncertain character was reported in 1787 (Volcanological Society of Japan, 1971). Historical eruptions attributed to the more dissected Tutupaca volcano during the 18th-20th centuries (Catalog of Active Volcanoes of the World), were considered by de Silva and Francis (1990) to have more likely originated from Yucamane volcano."  -Smithsonian Volcano Archive
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