Assertion: seamount's eruption | /r/HasProperty | about 2600 bc
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Source sentences:
text: The last eruption of Mauna Kea was about 4,600 years ago (about 2600 BC); because of this inactivity, Mauna Kea is assigned a United States Geological Survey hazard listing of 7 for its summit and 8 for its lower flanks, out of the lowest possible hazard rating of 9 (which is given to the extinct volcano Kohala).