Puʻu ʻOʻo

Puʻu ʻOʻo vent saw the longest-lasting and most voluminous of the Kilauea's eruptions, oozing an estimated 80 to 160 million gallons of lava per day, or 120 to 240 Olympic-sized swimming pools' worth, until it all suddenly disappeared in late April 2018 – the first clue to vulcanologists that something very big was about to go down.

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