Composite volcanoes are steep-sided volcanoes composed of many layers of volcanic rocks, usually made from high-viscosity lava, ash and rock debris.

There are two main types of volcano - composite and shield. The two types of volcano form in different places and have very different characteristics. Ash released from shield volcanoes often ...

With their tall peaks and straight, even sides, composite or stratovolcanoes are often visually striking. They form from repeated layers of lava flows, cinders, volcanic ash, and volcanic bombs.

Smoke rises from the crater of the Etna volcano as it erupts, on Mount Etna near Catania, Italy, on Monday. A huge plume of ash, gas and rock spewed forth from Europe's highest active volcano.

Video shows dangerously close footage of the very active Klyuchevskoy volcano in Siberia. A group of climbers braved the active volcano and captured mesmerizing video of a new cinder core.

Cinder Cone Volcanoes Cinder Cones are the simplest type of volcano, formed by the accumulation of tephra — ash, cinders, and larger fragments — erupted from a single vent.

Drone video taken near Mexico’s most active volcano continues to show ash and gasses spewing into the air as millions of residents continue to watch for signs of a larger eruption.

Bay Area armchair geologists can watch Mexico's most dangerous volcano from the safety of their homes via webcam. Colima Volcano has been producing "explosions, glowing avalanches and pyroclastic ...

Mount Etna produced a spectacularly explosive eruption Monday, sending a ripple of reddish clouds down from the southeast summit of Europe's highest active volcano.

Climbers get close to active Siberian volcano A group of climbers who tackled the Klyuchevskoy volcano in Siberia recently were rewarded for their efforts by the presence of an active new cinder cone.