This video shows the volcanic landscape of Poás Volcano, Costa Rica, where a large active crater sits beside dense green forest under thick clouds. Inside the crater is a bright green acidic lake ...

Japan is stepping up its volcano research that trails far behind its advanced studies on earthquakes despite being home to ...

While the USGS scientists learned plenty about volcanism in El Salvador during this trip, it also provided key insights to ...

Near the shore of the Caspian Sea is a very unique geological formation called the mud volcano islands. Recently, they have been discussed in the Earth Observatory blog of NASA. They have an unusual ...

By reconstructing a 700,000-year history of Methana volcano, geologists found a prehistoric phase when it appeared inactive ...

Scientists are captivated by the Tamu Massif, a colossal underwater structure in the Pacific. Initially believed to be the ...

The damage to agricultural products in Albay province due to the ashfall brought by Mayon Volcano’s unrest has reached over ...

Tiny crystals suggest extinct volcanoes could still grow underground, a finding that could reshape how scientists assess eruption risk.

Volcano Watch is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory ...

New images from the Mars Express spacecraft show ancient volcanic ash spreading across the Red Planet.