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There's a range for lava flow that stretches from a few inches to a number of miles. It depends mostly on a lava's viscosity. Highly vuc\\iscous lava volcanoes, such as Mt. St. Helens, tend to erupt violently, but lava flows are slow and quick to solidify. Underwater eruptions may have lava that solidifies on the outside almost instantly. Extremely low viscosity lava flows, like those in Hawaii, may run for days and cover miles before solidifying.

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12y ago

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