POZZUOLI, Italy — In Greek and Roman mythology, the Campi Flegrei volcano is depicted as the opening to the underworld. Its prehistoric eruptions blocked out the sun, turning summer into winter and ...

Yellowstone National Park has one of the largest volcanic systems on our planet. Its vast caldera stretches across much of the park's area and has given rise to some of the popular geysers, hot ...

Select an option below to continue reading this premium story. Already a Honolulu Star-Advertiser subscriber? Log in now to continue reading. The idea that a single volcanic eruption might have shaped ...

Far beneath the forests and hot springs of the American West, the continent’s largest active volcanic system is rumbling in ways scientists are only now beginning to fully resolve. New seismic ...