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The volcano has probably been erupting for at least 700,000 years and may have emerged above sea level about 400,000 years ago, although the oldest-known dated rocks do not extend beyond 200,000 years. Its
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Mauna Loa's most recent eruption occurred from March 24, 1984, to April 15, 1984. No recent eruptions of the volcano have caused fatalities, but eruptions in 1926 and 1950 destroyed villages, and the city of
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is partly built on lava flows from the late nineteenth century. In view of the hazards it poses to population centers, Mauna Loa is part of the
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will eventually carry the volcano away from the hotspot, and the volcano will then become extinct within 500,000 to one million years from now.
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program, which encourages studies of the most dangerous volcanoes. Mauna Loa has been intensively monitored by the
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covers the summit and the southeastern flank of the volcano, including a separate volcano,
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167:. The Hawaiian name "Mauna Loa" means "Long Mountain". Lava eruptions from Mauna Loa are
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for tens of millions of years. The slow drift of the
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229:Hawaii Volcanoes National Park
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209:Hawaiian Volcano Observatory
225:Mauna Loa Solar Observatory
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215:are undertaken at the
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189:Hawaiian island chain
133:[ˈmounəˈloə]
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