Thousands of viewers flock to witness the world's largest volcano erupt, jamming a highway in Mauna Loa that scientists say could soon be covered by the flow.
Jonathan Vigliotti reports.
Video shows fast-moving lava flow from Mauna Loa
Video taken on Monday (December 5) by the U.S. Geological Survey showed fissure 3 erupting on the Northeast Rift Zone of..
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