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Mauna Loa is thought to have first erupted under the sea between 1,000,000 and 700,000 years ago. The first eruption above sea level was around 400,000 years ago.

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16y ago
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13y ago

Mauna Loa was discovered in the year of 1912.

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15y ago

The last time it erupted was in 1984

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9y ago

a long time ago

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Q: When was Mauna Loa first formed on earth?
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