A mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are or have been erupted from the earth's crust - volcanoes, a partially buried Roman town-city near modern Naples in the Italian region of Campania - Pompei, Products of fire, incineration or combustion - ash, a planar fracture or discontinuity in a volume of rock, across which there has been significant displacement - fault lines, Hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this - lava, a volcano that is inactive but may become active in the fut - dorment, A volcanoe which erupts freuently - active, one of four classical states of matter. Near absolute zero, a substance exists as a solid - gas, the outermost solid shell of a rocky planet or moon, which is chemically distinct from the underlying mantle. - earth's crust, Become active and eject lava, ash, and gases - erupted,

volcano

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