The last caldera-forming eruption at Yellowstone "was much more complex than previously thought," according to the annual report about activity at the supervolcano. When you purchase through links on ...

Geologists say there is no evidence the Apolaki Caldera -- part of an extinct volcano located in the Philippine Sea -- could erupt and wipe the country off the map, contrary to doomsday posts ...

This stunning astronaut photo shows the natural beauty of Japan's Aso Caldera — a giant crater-like bowl containing 17 different volcanoes, leftover from major eruptions spanning over 200,000 years.

Since the Kobe Ocean Bottom Exploration Center (KOBEC) was established in 2015, the Center has carried out three survey voyages to the Kikai Caldera, south of Japan's main islands. Based on these ...

A giant, undiscovered volcano may exist beneath the waters surrounding a group of small islands off Alaska’s Aleutian chain, according to the American Geophysical Union. John Lyons/USGS. A giant and ...