Widely shared social media posts claimed a massive underwater volcano "the size of a city" was "showing signs it could erupt ...

The volcano last erupted in 2015, producing 450-foot-thick lava flows, but because of its remote location, it is not a threat ...

The Axial Seamount volcano is located nearly a mile beneath the sea approximately 300 miles off the Oregon Coast, just west of Astoria and along the Juan de Fuca Ridge.

The area where Axial Seamount is located is the most active in the Pacific Northwest, with the volcano erupting in 2015, 2011 and 1998. Axial Seamount is also the most monitored underwater volcano.

An underwater volcano situated 300 miles off the Oregon coast is getting closer to erupting for the first time in 10 years. The volcano, known as Axial Seamount, is formed by a hotspot in Earth's ...

A volcano eruption near Oregon is brewing — but don't panic about Axial Seamount. The undersea volcano has been attracting attention for months as scientists prepare for an eruption they expect ...

Heading down the West Coast, seismologists are also monitoring the Axial Seamount, a massive undersea volcano 300 miles off ...

The volcano, Axial Seamount, lies about a mile below the ocean's surface, about 300 miles from the coast of Astoria, Oregon.