A powerful underwater volcano off the U.S. coast is on the verge of erupting. The Axial Seamount, located deep in the Northeast Pacific, has shown intense seismic activity and rising magma pressure ...

The Axial Seamount – located hundreds of miles off the coast of Oregon and nearly 5,000 feet below the Pacific Ocean’s waves – erupted in April 2015, spewing a mile’s worth of lava onto the sea floor.

Amazing footage taken by Japan's Coast Guard shows an eruption near Iwo Jima after an eruption just two months prior to when ...