Volcanic explosion craters such as Dallol form during phreatic eruptions—where rising magma comes into contact with water beneath the surface of the Earth, causing a steam explosion.

像宽干谷这样爆裂的火山口形成于蒸汽喷发的过程中，在那里，上升的岩浆与地表下的水接触形成了蒸汽喷发。

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Eighteen-year-old Nicanor Mabao was one of the three who survived what scientists call a phreatic, or steam-driven, explosion.

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