Off the coast of Oregon, a massive undersea volcano, Axial Seamount, is gearing up for its next eruption. Situated 300 miles offshore and 4,626 feet beneath the Pacific Ocean’s surface ...

underwater robots with HD cameras are exploring Axial Seamount up close. They send back real-time footage of what’s happening beneath the waves, helping researchers understand the volcano’s ...

A Pacific submarine volcano called Axial Seamount is likely to erupt in 2025, freelance writer Rachel Berkowitz reported in “An undersea volcano may soon erupt near Oregon.” Reader Ginger ...

Charlotte Lytton and Matthew Abbott traveled to Tonga to report this story. All photographs were made in May 2023. Sept. 1 at 6:00 a.m. Warning: This graphic requires ...

The Axial Seamount submarine volcano exhibits an inflation–deflation cycle comparable to similar volcanoes on land. Measurements of ocean bottom pressure document the entire inflation ...