Molten lava from a 2017 eruption of Kilauea flows into the ocean off Hawaii. Even once it cools, the lava “deltas” formed by eruptions can be dangerous, Hawaii officials say. Photo by Marc Szeglat via ...

A lava flow from Kilauea Volcano on Hawaii's Big Island has reached the ocean for the first time since 2013. Lava began flowing on May 24, and traveled 6.5 miles over Pulama Pali to reach the ocean on ...

LOS LLANOS DE ARIDANE, Spain — A bright red river of lava from the volcano on Spain’s La Palma island finally tumbled over a cliff and into the Atlantic Ocean, setting off huge plumes of steam and ...

Once inside the oceanic mantle, bits of continents become part of the magma factory that powers ocean volcanoes.

On Sunday, lava from Hawaii’s Kilauea volcano crossed a highway and emptied into the ocean. It’s quite a sight to behold: massive dark clouds billowing into the air. Those clouds are are a mix of ...

The Lava River Cave exhaled chilled air. I put on my sweatshirt, despite the hot July day. Though I'd been warned about the sudden drop in temperature to a crisp 42 degrees, it was hard to believe I'd ...