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Lava flow
Lava flows are masses of
magma that pour onto
the Earth's surface during an
effusive eruption; they
include both moving
lava and the resulting
solidified deposits. Lava flows come in a great variety of shapes
and sizes. This is due to the wide range in lava discharge during
eruptions, characteristics of the erupting vent and topography over
which lava travels, and viscosity of the different lava types.
Left: A molten river of lava runs through the Valle del Bove
during an eruption by Mount Etna in Sicily.
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