"The Pliocene-to-Quaternary Gallego volcanics, comprising a group of steeply dissected cones, cover a large area of NW Guadalcanal Island (Hackman, 1980). Mount Roundhead is a small, but well-preserved volcano. Local traditions mention an historical eruption, but this could refer to an eruption from Savo volcano (1991 pers. comm. from Coleman to R W Johnson). The International Association of Volcanology and Chemistry of the Earth's Interior (1973) considered andesitic Mount Esperance to have been active during the past 2000 years."  -Smithsonian Volcano Archive
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