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Hawaii Volcanoes Observatory lists the first subaerial (Above Sea Level) eruption at approximately 300,000 years before present. The oldest dated rock from the mountain is 128,000 years before present. The most recent eruptions from Hualalai was in 1800 and 1801. However, Hualalai is nowhere near extinct and is believed to be only half way through its complete eruptive cycle, as 80% of the volcanoes surface is covered by lava flows younger than 5,000 years ago. See related links for further information from HVO.

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13y ago

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