In contrast to steeper mud domes consisting of large quantities of fragmentary material, caldera-type mud volcanoes seem to consist mostly of fine-grained extruded sediment. It remains to be seen ...

Though the volcano’s magma chambers could hold enough material for a caldera-forming event, none of them are likely to erupt ...

The Greek island has a long history of earthquakes, but what is causing the recent series of quakes has scientists perplexed.

The Bárðarbunga volcano system was responsible for Iceland's largest eruption for 300 years back in 2014. After a recent increase in seismic activity, could it be about to erupt again?

Violent eruptions continue in Hawaii, sending lava hundreds of feet into the air and spreading glass threads over nearby areas.