Magma build-up activity in the region of a huge underwater volcano named the Axial Seamount just 300 miles off the US coast ...
Poised some 300 miles off the coast of Oregon, one mile beneath the sea, yet rising 3,600 feet high, and spanning 1.2 miles ...
One of the most active volcanoes in the world sits just a few hundred miles off the U.S. West Coast, and some scientists ...
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