A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

The eruption of Kilauea within the summit caldera resumed today just before 3 p.m. According to the Hawaiian Volcano Observatory, this marks the beginning of the fifth episode of the current eruption ...

Caldera volcanic eruptions create geological hazards that affect many communities around the world. Geophysical, geochemical and remote sensing data have become essential for understanding the tectono ...

A stunning view from space reveals the true size and power of the Aso Caldera, located in the heart of Kyushu, Japan. This remarkable geological structure, home to 17 volcanoes, is the result of ...

At first glance, the region covered by this latest Mars Express image release appears to be pockmarked with impact craters. But the largest structure among them may hold a rather explosive secret: it ...